<table><caption>Table B.1: Number and luminosity of GMCs and H II regions per galaxy of the studied sample as a function of the MOP.</caption><thead><tr><th rowspan="2">Galaxy</th><th rowspan="2">%</th><th colspan="2">GMC</th><th colspan="2">H II regions</th><th colspan="2">CO mass</th><th colspan="2">Hα luminosity</th></tr><tr><th>Total #</th><th>Matched %</th><th>Total #</th><th>Matched %</th><th>Total M<sub>☉</sub></th><th>Matched %</th><th>Total erg s<sup>-1</sup></th><th>Matched %</th></tr></thead><tbody><tr><td rowspan="3">NGC 0628</td><td>10</td><td>809</td><td>56.7</td><td>2869</td><td>23.5</td><td>9.69×10<sup>8</sup></td><td>69.0</td><td>9.58×10<sup>40</sup></td><td>81.1</td></tr><tr><td>40</td><td></td><td>15.0</td><td></td><td>4.3</td><td>9.69×10<sup>8</sup></td><td>18.7</td><td>9.58×10<sup>40</sup></td><td>51.0</td></tr><tr><td>70</td><td></td><td>3.5</td><td></td><td>1.0</td><td>9.69×10<sup>8</sup></td><td>4.1</td><td>9.58×10<sup>40</sup></td><td>21.5</td></tr><tr><td rowspan="3">NGC 1087</td><td>10</td><td>308</td><td>60.4</td><td>1011</td><td>27.7</td><td>1.07×10<sup>9</sup></td><td>64.7</td><td>1.76×10<sup>41</sup></td><td>58.5</td></tr><tr><td>40</td><td></td><td>14.3</td><td></td><td>4.4</td><td>1.07×10<sup>9</sup></td><td>14.2</td><td>1.76×10<sup>41</sup></td><td>32.7</td></tr><tr><td>70</td><td></td><td>2.6</td><td></td><td>0.8</td><td>1.07×10<sup>9</sup></td><td>3.3</td><td>1.76×10<sup>41</sup></td><td>15.4</td></tr><tr><td rowspan="3">NGC 1300</td><td>10</td><td>434</td><td>37.6</td><td>1478</td><td>15.0</td><td>1.21×10<sup>9</sup></td><td>39.7</td><td>9.16×10<sup>40</sup></td><td>52.1</td></tr><tr><td>40</td><td></td><td>14.3</td><td></td><td>4.2</td><td>1.21×10<sup>9</sup></td><td>16.9</td><td>9.16×10<sup>40</sup></td><td>32.1</td></tr><tr><td>70</td><td></td><td>2.8</td><td></td><td>0.8</td><td>1.21×10<sup>9</sup></td><td>2.1</td><td>9.16×10<sup>40</sup></td><td>10.2</td></tr><tr><td rowspan="3">NGC 1365</td><td>10</td><td>1092</td><td>7.1</td><td>1455</td><td>6.0</td><td>1.62×10<sup>10</sup></td><td>10.5</td><td>1.38×10<sup>42</sup></td><td>7.6</td></tr><tr><td>40</td><td></td><td>3.7</td><td></td><td>2.7</td><td>1.62×10<sup>10</sup></td><td>4.5</td><td>1.38×10<sup>42</sup></td><td>5.6</td></tr><tr><td>70</td><td></td><td>1.4</td><td></td><td>1.0</td><td>1.62×10<sup>10</sup></td><td>1.5</td><td>1.38×10<sup>42</sup></td><td>3.2</td></tr><tr><td rowspan="3">NGC 1385</td><td>10</td><td>407</td><td>49.4</td><td>1029</td><td>26.1</td><td>1.16×10<sup>9</sup></td><td>65.3</td><td>2.97×10<sup>41</sup></td><td>66.4</td></tr><tr><td>40</td><td></td><td>20.1</td><td></td><td>8.0</td><td>1.16×10<sup>9</sup></td><td>28.5</td><td>2.97×10<sup>41</sup></td><td>50.2</td></tr><tr><td>70</td><td></td><td>5.4</td><td></td><td>2.1</td><td>1.16×10<sup>9</sup></td><td>9.1</td><td>2.97×10<sup>41</sup></td><td>27.1</td></tr><tr><td rowspan="3">NGC 1433</td><td>10</td><td>355</td><td>25.1</td><td>1736</td><td>6.0</td><td>1.03×10<sup>9</sup></td><td>20.2</td><td>6.70×10<sup>40</sup></td><td>26.4</td></tr><tr><td>40</td><td></td><td>12.4</td><td></td><td>2.5</td><td>1.03×10<sup>9</sup></td><td>10.5</td><td>6.70×10<sup>40</sup></td><td>21.6</td></tr><tr><td>70</td><td></td><td>3.9</td><td></td><td>0.8</td><td>1.03×10<sup>9</sup></td><td>2.4</td><td>6.70×10<sup>40</sup></td><td>11.5</td></tr><tr><td rowspan="3">NGC 1512</td><td>10</td><td>317</td><td>20.2</td><td>632</td><td>10.8</td><td>6.36×10<sup>8</sup></td><td>21.7</td><td>6.04×10<sup>40</sup></td><td>42.9</td></tr><tr><td>40</td><td></td><td>13.2</td><td></td><td>6.8</td><td>6.36×10<sup>8</sup></td><td>14.2</td><td>6.04×10<sup>40</sup></td><td>38.7</td></tr><tr><td>70</td><td></td><td>5.4</td><td></td><td>2.7</td><td>6.36×10<sup>8</sup></td><td>7.0</td><td>6.04×10<sup>40</sup></td><td>32.7</td></tr><tr><td rowspan="3">NGC 1566</td><td>10</td><td>1127</td><td>38.9</td><td>2404</td><td>24.1</td><td>5.30×10<sup>9</sup></td><td>48.9</td><td>4.20×10<sup>41</sup></td><td>63.5</td></tr><tr><td>40</td><td></td><td>12.8</td><td></td><td>6.1</td><td>5.30×10<sup>9</sup></td><td>20.2</td><td>4.20×10<sup>41</sup></td><td>49.0</td></tr><tr><td>70</td><td></td><td>2.7</td><td></td><td>1.2</td><td>5.30×10<sup>9</sup></td><td>4.1</td><td>4.20×10<sup>41</sup></td><td>22.0</td></tr><tr><td rowspan="3">NGC 1672</td><td>10</td><td>517</td><td>31.5</td><td>1581</td><td>13.9</td><td>6.14×10<sup>9</sup></td><td>43.4</td><td>6.77×10<sup>41</sup></td><td>52.3</td></tr><tr><td>40</td><td></td><td>7.9</td><td></td><td>2.6</td><td>6.14×10<sup>9</sup></td><td>14.9</td><td>6.77×10<sup>41</sup></td><td>33.5</td></tr><tr><td>70</td><td></td><td>1.4</td><td></td><td>0.4</td><td>6.14×10<sup>9</sup></td><td>3.5</td><td>6.77×10<sup>41</sup></td><td>9.3</td></tr><tr><td rowspan="3">NGC 2835</td><td>10</td><td>211</td><td>26.5</td><td>1121</td><td>5.4</td><td>1.05×10<sup>8</sup></td><td>44.5</td><td>5.78×10<sup>40</sup></td><td>32.0</td></tr><tr><td>40</td><td></td><td>22.3</td><td></td><td>4.3</td><td>1.05×10<sup>8</sup></td><td>37.6</td><td>5.78×10<sup>40</sup></td><td>28.8</td></tr><tr><td>70</td><td></td><td>17.1</td><td></td><td>3.3</td><td>1.05×10<sup>8</sup></td><td>26.9</td><td>5.78×10<sup>40</sup></td><td>26.5</td></tr><tr><td rowspan="3">NGC 3351</td><td>10</td><td>370</td><td>42.2</td><td>1284</td><td>14.8</td><td>5.64×10<sup>8</sup></td><td>34.3</td><td>6.35×10<sup>40</sup></td><td>18.4</td></tr><tr><td>40</td><td></td><td>8.9</td><td></td><td>2.6</td><td>5.64×10<sup>8</sup></td><td>11.2</td><td>6.35×10<sup>40</sup></td><td>13.4</td></tr><tr><td>70</td><td></td><td>1.9</td><td></td><td>0.5</td><td>5.64×10<sup>8</sup></td><td>1.1</td><td>6.35×10<sup>40</sup></td><td>2.0</td></tr><tr><td rowspan="3">NGC 3627</td><td>10</td><td>983</td><td>35.2</td><td>1635</td><td>27.6</td><td>5.56×10<sup>9</sup></td><td>41.1</td><td>3.77×10<sup>41</sup></td><td>59.2</td></tr><tr><td>40</td><td></td><td>7.0</td><td></td><td>4.3</td><td>5.56×10<sup>9</sup></td><td>10.0</td><td>3.77×10<sup>41</sup></td><td>34.2</td></tr><tr><td>70</td><td></td><td>2.4</td><td></td><td>1.5</td><td>5.56×10<sup>9</sup></td><td>2.7</td><td>3.77×10<sup>41</sup></td><td>15.0</td></tr><tr><td rowspan="3">NGC 4254</td><td>10</td><td>918</td><td>61.8</td><td>2960</td><td>29.4</td><td>5.86×10<sup>9</sup></td><td>76.2</td><td>4.44×10<sup>41</sup></td><td>78.0</td></tr><tr><td>40</td><td></td><td>10.1</td><td></td><td>3.2</td><td>5.86×10<sup>9</sup></td><td>13.0</td><td>4.44×10<sup>41</sup></td><td>26.8</td></tr><tr><td>70</td><td></td><td>0.9</td><td></td><td>0.3</td><td>5.86×10<sup>9</sup></td><td>1.5</td><td>4.44×10<sup>41</sup></td><td>5.0</td></tr><tr><td rowspan="3">NGC 4303</td><td>10</td><td>874</td><td>49.7</td><td>3067</td><td>21.6</td><td>5.98×10<sup>9</sup></td><td>63.6</td><td>6.22×10<sup>41</sup></td><td>73.2</td></tr><tr><td>40</td><td></td><td>10.1</td><td></td><td>2.9</td><td>5.98×10<sup>9</sup></td><td>14.1</td><td>6.22×10<sup>41</sup></td><td>35.1</td></tr><tr><td>70</td><td></td><td>1.7</td><td></td><td>0.5</td><td>5.98×10<sup>9</sup></td><td>1.7</td><td>6.22×10<sup>41</sup></td><td>8.6</td></tr><tr><td rowspan="3">NGC 4321</td><td>10</td><td>1214</td><td>40.4</td><td>1847</td><td>34.4</td><td>4.94×10<sup>9</sup></td><td>54.5</td><td>3.03×10<sup>41</sup></td><td>66.2</td></tr><tr><td>40</td><td></td><td>6.6</td><td></td><td>4.3</td><td>4.94×10<sup>9</sup></td><td>11.7</td><td>3.03×10<sup>41</sup></td><td>34.8</td></tr><tr><td>70</td><td></td><td>1.2</td><td></td><td>0.8</td><td>4.94×10<sup>9</sup></td><td>2.9</td><td>3.03×10<sup>41</sup></td><td>12.8</td></tr><tr><td rowspan="3">NGC 4535</td><td>10</td><td>638</td><td>32.9</td><td>1938</td><td>15.3</td><td>1.78×10<sup>9</sup></td><td>46.8</td><td>1.26×10<sup>41</sup></td><td>57.3</td></tr><tr><td>40</td><td></td><td>5.5</td><td></td><td>1.8</td><td>1.78×10<sup>9</sup></td><td>8.2</td><td>1.26×10<sup>41</sup></td><td>24.7</td></tr><tr><td>70</td><td></td><td>0.9</td><td></td><td>0.3</td><td>1.78×10<sup>9</sup></td><td>2.8</td><td>1.26×10<sup>41</sup></td><td>11.0</td></tr><tr><td rowspan="3">NGC 5068</td><td>10</td><td>292</td><td>39.4</td><td>1857</td><td>8.6</td><td>1.01×10<sup>8</sup></td><td>56.8</td><td>2.76×10<sup>40</sup></td><td>50.3</td></tr><tr><td>40</td><td></td><td>22.3</td><td></td><td>3.6</td><td>1.01×10<sup>8</sup></td><td>27.8</td><td>2.76×10<sup>40</sup></td><td>35.7</td></tr><tr><td>70</td><td></td><td>13.4</td><td></td><td>2.1</td><td>1.01×10<sup>8</sup></td><td>15.0</td><td>2.76×10<sup>40</sup></td><td>29.4</td></tr></tbody></table>
<table><caption>Table B.1: Number and luminosity of GMCs and H II regions per galaxy of the studied sample as a function of the MOP.</caption><thead><tr><th rowspan="2">Galaxy</th><th rowspan="2">%</th><th colspan="2">GMC</th><th colspan="2">H II regions</th><th colspan="2">CO mass</th><th colspan="2">Hα luminosity</th></tr><tr><th>Total #</th><th>Matched %</th><th>Total #</th><th>Matched %</th><th>Total M<sub>☉</sub></th><th>Matched %</th><th>Total erg s<sup>-1</sup></th><th>Matched %</th></tr></thead><tbody><tr><td rowspan="3">NGC 0628</td><td>10</td><td>809</td><td>56.7</td><td>2869</td><td>23.5</td><td>9.69×10<sup>8</sup></td><td>69.0</td><td>9.58×10<sup>40</sup></td><td>81.1</td></tr><tr><td>40</td><td></td><td>15.0</td><td></td><td>4.3</td><td>9.69×10<sup>8</sup></td><td>18.7</td><td>9.58×10<sup>40</sup></td><td>51.0</td></tr><tr><td>70</td><td></td><td>3.5</td><td></td><td>1.0</td><td>9.69×10<sup>8</sup></td><td>4.1</td><td>9.58×10<sup>40</sup></td><td>21.5</td></tr><tr><td rowspan="3">NGC 1087</td><td>10</td><td>308</td><td>60.4</td><td>1011</td><td>27.7</td><td>1.07×10<sup>9</sup></td><td>64.7</td><td>1.76×10<sup>41</sup></td><td>58.5</td></tr><tr><td>40</td><td></td><td>14.3</td><td></td><td>4.4</td><td>1.07×10<sup>9</sup></td><td>14.2</td><td>1.76×10<sup>41</sup></td><td>32.7</td></tr><tr><td>70</td><td></td><td>2.6</td><td></td><td>0.8</td><td>1.07×10<sup>9</sup></td><td>3.3</td><td>1.76×10<sup>41</sup></td><td>15.4</td></tr><tr><td rowspan="3">NGC 1300</td><td>10</td><td>434</td><td>37.6</td><td>1478</td><td>15.0</td><td>1.21×10<sup>9</sup></td><td>39.7</td><td>9.16×10<sup>40</sup></td><td>52.1</td></tr><tr><td>40</td><td></td><td>14.3</td><td></td><td>4.2</td><td>1.21×10<sup>9</sup></td><td>16.9</td><td>9.16×10<sup>40</sup></td><td>32.1</td></tr><tr><td>70</td><td></td><td>2.8</td><td></td><td>0.8</td><td>1.21×10<sup>9</sup></td><td>2.1</td><td>9.16×10<sup>40</sup></td><td>10.2</td></tr><tr><td rowspan="3">NGC 1365</td><td>10</td><td>1092</td><td>7.1</td><td>1455</td><td>6.0</td><td>1.62×10<sup>10</sup></td><td>10.5</td><td>1.38×10<sup>42</sup></td><td>7.6</td></tr><tr><td>40</td><td></td><td>3.7</td><td></td><td>2.7</td><td>1.62×10<sup>10</sup></td><td>4.5</td><td>1.38×10<sup>42</sup></td><td>5.6</td></tr><tr><td>70</td><td></td><td>1.4</td><td></td><td>1.0</td><td>1.62×10<sup>10</sup></td><td>1.5</td><td>1.38×10<sup>42</sup></td><td>3.2</td></tr><tr><td rowspan="3">NGC 1385</td><td>10</td><td>407</td><td>49.4</td><td>1029</td><td>26.1</td><td>1.16×10<sup>9</sup></td><td>65.3</td><td>2.97×10<sup>41</sup></td><td>66.4</td></tr><tr><td>40</td><td></td><td>20.1</td><td></td><td>8.0</td><td>1.16×10<sup>9</sup></td><td>28.5</td><td>2.97×10<sup>41</sup></td><td>50.2</td></tr><tr><td>70</td><td></td><td>5.4</td><td></td><td>2.1</td><td>1.16×10<sup>9</sup></td><td>9.1</td><td>2.97×10<sup>41</sup></td><td>27.1</td></tr><tr><td rowspan="3">NGC 1433</td><td>10</td><td>355</td><td>25.1</td><td>1736</td><td>6.0</td><td>1.03×10<sup>9</sup></td><td>20.2</td><td>6.70×10<sup>40</sup></td><td>26.4</td></tr><tr><td>40</td><td></td><td>12.4</td><td></td><td>2.5</td><td>1.03×10<sup>9</sup></td><td>10.5</td><td>6.70×10<sup>40</sup></td><td>21.6</td></tr><tr><td>70</td><td></td><td>3.9</td><td></td><td>0.8</td><td>1.03×10<sup>9</sup></td><td>2.4</td><td>6.70×10<sup>40</sup></td><td>11.5</td></tr><tr><td rowspan="3">NGC 1512</td><td>10</td><td>317</td><td>20.2</td><td>632</td><td>10.8</td><td>6.36×10<sup>8</sup></td><td>21.7</td><td>6.04×10<sup>40</sup></td><td>42.9</td></tr><tr><td>40</td><td></td><td>13.2</td><td></td><td>6.8</td><td>6.36×10<sup>8</sup></td><td>14.2</td><td>6.04×10<sup>40</sup></td><td>38.7</td></tr><tr><td>70</td><td></td><td>5.4</td><td></td><td>2.7</td><td>6.36×10<sup>8</sup></td><td>7.0</td><td>6.04×10<sup>40</sup></td><td>32.7</td></tr><tr><td rowspan="3">NGC 1566</td><td>10</td><td>1127</td><td>38.9</td><td>2404</td><td>24.1</td><td>5.30×10<sup>9</sup></td><td>48.9</td><td>4.20×10<sup>41</sup></td><td>63.5</td></tr><tr><td>40</td><td></td><td>12.8</td><td></td><td>6.1</td><td>5.30×10<sup>9</sup></td><td>20.2</td><td>4.20×10<sup>41</sup></td><td>49.0</td></tr><tr><td>70</td><td></td><td>2.7</td><td></td><td>1.2</td><td>5.30×10<sup>9</sup></td><td>4.1</td><td>4.20×10<sup>41</sup></td><td>22.0</td></tr><tr><td rowspan="3">NGC 1672</td><td>10</td><td>517</td><td>31.5</td><td>1581</td><td>13.9</td><td>6.14×10<sup>9</sup></td><td>43.4</td><td>6.77×10<sup>41</sup></td><td>52.3</td></tr><tr><td>40</td><td></td><td>7.9</td><td></td><td>2.6</td><td>6.14×10<sup>9</sup></td><td>14.9</td><td>6.77×10<sup>41</sup></td><td>33.5</td></tr><tr><td>70</td><td></td><td>1.4</td><td></td><td>0.4</td><td>6.14×10<sup>9</sup></td><td>3.5</td><td>6.77×10<sup>41</sup></td><td>9.3</td></tr><tr><td rowspan="3">NGC 2835</td><td>10</td><td>211</td><td>26.5</td><td>1121</td><td>5.4</td><td>1.05×10<sup>8</sup></td><td>44.5</td><td>5.78×10<sup>40</sup></td><td>32.0</td></tr><tr><td>40</td><td></td><td>22.3</td><td></td><td>4.3</td><td>1.05×10<sup>8</sup></td><td>37.6</td><td>5.78×10<sup>40</sup></td><td>28.8</td></tr><tr><td>70</td><td></td><td>17.1</td><td></td><td>3.3</td><td>1.05×10<sup>8</sup></td><td>26.9</td><td>5.78×10<sup>40</sup></td><td>26.5</td></tr><tr><td rowspan="3">NGC 3351</td><td>10</td><td>370</td><td>42.2</td><td>1284</td><td>14.8</td><td>5.64×10<sup>8</sup></td><td>34.3</td><td>6.35×10<sup>40</sup></td><td>18.4</td></tr><tr><td>40</td><td></td><td>8.9</td><td></td><td>2.6</td><td>5.64×10<sup>8</sup></td><td>11.2</td><td>6.35×10<sup>40</sup></td><td>13.4</td></tr><tr><td>70</td><td></td><td>1.9</td><td></td><td>0.5</td><td>5.64×10<sup>8</sup></td><td>1.1</td><td>6.35×10<sup>40</sup></td><td>2.0</td></tr><tr><td rowspan="3">NGC 3627</td><td>10</td><td>983</td><td>35.2</td><td>1635</td><td>27.6</td><td>5.56×10<sup>9</sup></td><td>41.1</td><td>3.77×10<sup>41</sup></td><td>59.2</td></tr><tr><td>40</td><td></td><td>7.0</td><td></td><td>4.3</td><td>5.56×10<sup>9</sup></td><td>10.0</td><td>3.77×10<sup>41</sup></td><td>34.2</td></tr><tr><td>70</td><td></td><td>2.4</td><td></td><td>1.5</td><td>5.56×10<sup>9</sup></td><td>2.7</td><td>3.77×10<sup>41</sup></td><td>15.0</td></tr><tr><td rowspan="3">NGC 4254</td><td>10</td><td>918</td><td>61.8</td><td>2960</td><td>29.4</td><td>5.86×10<sup>9</sup></td><td>76.2</td><td>4.44×10<sup>41</sup></td><td>78.0</td></tr><tr><td>40</td><td></td><td>10.1</td><td></td><td>3.2</td><td>5.86×10<sup>9</sup></td><td>13.0</td><td>4.44×10<sup>41</sup></td><td>26.8</td></tr><tr><td>70</td><td></td><td>0.9</td><td></td><td>0.3</td><td>5.86×10<sup>9</sup></td><td>1.5</td><td>4.44×10<sup>41</sup></td><td>5.0</td></tr><tr><td rowspan="3">NGC 4303</td><td>10</td><td>874</td><td>49.7</td><td>3067</td><td>21.6</td><td>5.98×10<sup>9</sup></td><td>63.6</td><td>6.22×10<sup>41</sup></td><td>73.2</td></tr><tr><td>40</td><td></td><td>10.1</td><td></td><td>2.9</td><td>5.98×10<sup>9</sup></td><td>14.1</td><td>6.22×10<sup>41</sup></td><td>35.1</td></tr><tr><td>70</td><td></td><td>1.7</td><td></td><td>0.5</td><td>5.98×10<sup>9</sup></td><td>1.7</td><td>6.22×10<sup>41</sup></td><td>8.6</td></tr><tr><td rowspan="3">NGC 4321</td><td>10</td><td>1214</td><td>40.4</td><td>1847</td><td>34.4</td><td>4.94×10<sup>9</sup></td><td>54.5</td><td>3.03×10<sup>41</sup></td><td>66.2</td></tr><tr><td>40</td><td></td><td>6.6</td><td></td><td>4.3</td><td>4.94×10<sup>9</sup></td><td>11.7</td><td>3.03×10<sup>41</sup></td><td>34.8</td></tr><tr><td>70</td><td></td><td>1.2</td><td></td><td>0.8</td><td>4.94×10<sup>9</sup></td><td>2.9</td><td>3.03×10<sup>41</sup></td><td>12.8</td></tr><tr><td rowspan="3">NGC 4535</td><td>10</td><td>638</td><td>32.9</td><td>1938</td><td>15.3</td><td>1.78×10<sup>9</sup></td><td>46.8</td><td>1.26×10<sup>41</sup></td><td>57.3</td></tr><tr><td>40</td><td></td><td>5.5</td><td></td><td>1.8</td><td>1.78×10<sup>9</sup></td><td>8.2</td><td>1.26×10<sup>41</sup></td><td>24.7</td></tr><tr><td>70</td><td></td><td>0.9</td><td></td><td>0.3</td><td>1.78×10<sup>9</sup></td><td>2.8</td><td>1.26×10<sup>41</sup></td><td>11.0</td></tr><tr><td rowspan="3">NGC 5068</td><td>10</td><td>292</td><td>39.4</td><td>1857</td><td>8.6</td><td>1.01×10<sup>8</sup></td><td>56.8</td><td>2.76×10<sup>40</sup></td><td>50.3</td></tr><tr><td>40</td><td></td><td>22.3</td><td></td><td>3.6</td><td>1.01×10<sup>8</sup></td><td>27.8</td><td>2.76×10<sup>40</sup></td><td>35.7</td></tr><tr><td>70</td><td></td><td>13.4</td><td></td><td>2.1</td><td>1.01×10<sup>8</sup></td><td>15.0</td><td>2.76×10<sup>40</sup></td><td>29.4</td></tr></tbody></table>
## Appendix C: Supplemental information to assess the robustness of the results

<table><caption>Table C.1: Kolmogorov-Smirnov tests performed to assess whether the distributions are significantly different. **Top:** Comparison of the distributions of matched GMC-H II regions with their parent distributions. **Bottom:** Comparison of the distributions of matched GMC-H II regions for different minimum overlap percentages.</caption><caption>Parent distribution versus matched GMC-H II regions</caption><thead><tr><th rowspan="2">Minimum<br>Overlap<br>Percentage</th><th rowspan="2"></th><th rowspan="2">Size</th><th colspan="6">GMC properties</th></tr><tr><th>L<sub>CO</sub></th><th>σ<sub>v</sub></th><th>Σ<sub>mol</sub></th><th>σ<sub>0</sub></th><th>α<sub>vir</sub></th><th>T<sub>peak</sub></th><th>τ<sub>ff</sub></th></tr></thead><tbody><tr><td rowspan="3">10%</td><td>s value</td><td>1.00</td><td>1.00</td><td>0.73</td><td>1.00</td><td>0.98</td><td>0.78</td><td>0.92</td><td>0.99</td></tr><tr><td>p value</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td></tr><tr><td>Different ?</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td></tr><tr><td rowspan="3">40%</td><td>s value</td><td>1.00</td><td>1.00</td><td>0.73</td><td>1.00</td><td>0.98</td><td>0.80</td><td>0.88</td><td>0.99</td></tr><tr><td>p value</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td></tr><tr><td>Different ?</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td></tr><tr><td rowspan="3">70%</td><td>s value</td><td>1.00</td><td>1.00</td><td>0.73</td><td>1.00</td><td>0.98</td><td>0.83</td><td>0.86</td><td>0.99</td></tr><tr><td>p value</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td></tr><tr><td>Different ?</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td></tr></tbody></table>

<table><caption>Table C.2: Anderson-Darling tests performed to assess whether the distributions are significantly different. **Top:** Comparison of the distributions of matched GMC-H II regions with their parent distributions. **Bottom:** Comparison of the distributions of matched GMC-H II regions for different minimum overlap percentages.</caption><caption>Matched GMC-H II regions versus Matched GMC-H II regions</caption><thead><tr><th rowspan="2">Minimum<br>Overlap<br>Percentage</th><th rowspan="2"></th><th rowspan="2">Size</th><th colspan="6">GMC properties</th></tr><tr><th>L<sub>CO</sub></th><th>σ<sub>v</sub></th><th>Σ<sub>mol</sub></th><th>σ<sub>0</sub></th><th>α<sub>vir</sub></th><th>T<sub>peak</sub></th><th>τ<sub>ff</sub></th></tr></thead><tbody><tr><td rowspan="3">10% vs. 40%</td><td>s value</td><td>0.20</td><td>0.09</td><td>0.05</td><td>0.13</td><td>0.06</td><td>0.07</td><td>0.11</td><td>0.17</td></tr><tr><td>p value</td><td>«1e-3</td><td>«1e-3</td><td>1.60e-02</td><td>«1e-3</td><td>5.20e-03</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td></tr><tr><td>Different ?</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td></tr><tr><td rowspan="3">10% vs. 70%</td><td>s value</td><td>0.35</td><td>0.22</td><td>0.13</td><td>0.24</td><td>0.10</td><td>0.11</td><td>0.20</td><td>0.32</td></tr><tr><td>p value</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>3.94e-03</td><td>2.05e-03</td><td>«1e-3</td><td>«1e-3</td></tr><tr><td>Different ?</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td></tr><tr><td rowspan="3">40% vs. 70%</td><td>s value</td><td>0.20</td><td>0.14</td><td>0.09</td><td>0.12</td><td>0.05</td><td>0.04</td><td>0.10</td><td>0.17</td></tr><tr><td>p value</td><td>«1e-3</td><td>«1e-3</td><td>3.98e-02</td><td>3.05e-03</td><td>4.86e-01</td><td>8.18e-01</td><td>1.40e-02</td><td>«1e-3</td></tr><tr><td>Different ?</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>no</td><td>yes</td><td>yes</td></tr></tbody></table>

<table><caption>Parent distribution versus matched GMC-H II regions</caption><thead><tr><th rowspan="2">Minimum<br>Overlap<br>Percentage</th><th rowspan="2"></th><th rowspan="2">Size</th><th colspan="6">GMC properties</th></tr><tr><th>L<sub>CO</sub></th><th>σ<sub>v</sub></th><th>Σ<sub>mol</sub></th><th>σ<sub>0</sub></th><th>α<sub>vir</sub></th><th>T<sub>peak</sub></th><th>τ<sub>ff</sub></th></tr></thead><tbody><tr><td rowspan="3">10%</td><td>s value</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td></tr><tr><td>c value</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td></tr><tr><td>p value</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td></tr><tr><td></td><td>Different ?</td><td>yes</td><td>yes</td><td>no</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td></tr><tr><td rowspan="3">40%</td><td>s value</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td></tr><tr><td>c value</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td></tr><tr><td>p value</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td></tr><tr><td></td><td>Different ?</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td></tr><tr><td rowspan="3">70%</td><td>s value</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td></tr><tr><td>c value</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td></tr><tr><td>p value</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td></tr><tr><td></td><td>Different ?</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td></tr></tbody></table>

<table><caption>Matched GMC-H II regions versus Matched GMC-H II regions</caption><thead><tr><th rowspan="2">Minimum<br>Overlap<br>Percentage</th><th rowspan="2"></th><th rowspan="2">Size</th><th colspan="6">GMC properties</th></tr><tr><th>L<sub>CO</sub></th><th>σ<sub>v</sub></th><th>Σ<sub>mol</sub></th><th>σ<sub>0</sub></th><th>α<sub>vir</sub></th><th>T<sub>peak</sub></th><th>τ<sub>ff</sub></th></tr></thead><tbody><tr><td rowspan="3">10% vs. 40%</td><td>s value</td><td>»1e2</td><td>21.72</td><td>6.79</td><td>63.95</td><td>7.13</td><td>14.61</td><td>35.91</td><td>97.71</td></tr><tr><td>c value</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td></tr><tr><td>p value</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td></tr><tr><td></td><td>Different ?</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td></tr><tr><td rowspan="3">10% vs. 70%</td><td>s value</td><td>»1e2</td><td>48.69</td><td>13.61</td><td>55.43</td><td>8.62</td><td>8.24</td><td>37.88</td><td>»1e2</td></tr><tr><td>c value</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td></tr><tr><td>p value</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td></tr><tr><td></td><td>Different ?</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td></tr><tr><td rowspan="3">40% vs. 70%</td><td>s value</td><td>30.20</td><td>12.92</td><td>2.85</td><td>7.35</td><td>0.74</td><td>-0.50</td><td>6.15</td><td>20.06</td></tr><tr><td>c value</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td></tr><tr><td>p value</td><td>«1e-3</td><td>«1e-3</td><td>2.22e-02</td><td>«1e-3</td><td>1.63e-01</td><td>2.50e-01</td><td>1.38e-03</td><td>«1e-3</td></tr><tr><td></td><td>Different ?</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>no</td><td>no</td><td>yes</td><td>yes</td></tr></tbody></table>
## Appendix C: Supplemental information to assess the robustness of the results

<table><caption>Table C.1: Kolmogorov-Smirnov tests performed to assess whether the distributions are significantly different. **Top:** Comparison of the distributions of matched GMC-H II regions with their parent distributions. **Bottom:** Comparison of the distributions of matched GMC-H II regions for different minimum overlap percentages.</caption><caption>Parent distribution versus matched GMC-H II regions</caption><thead><tr><th rowspan="2">Minimum<br>Overlap<br>Percentage</th><th rowspan="2"></th><th rowspan="2">Size</th><th colspan="6">GMC properties</th></tr><tr><th>L<sub>CO</sub></th><th>σ<sub>v</sub></th><th>Σ<sub>mol</sub></th><th>σ<sub>0</sub></th><th>α<sub>vir</sub></th><th>T<sub>peak</sub></th><th>τ<sub>ff</sub></th></tr></thead><tbody><tr><td rowspan="3">10%</td><td>s value</td><td>1.00</td><td>1.00</td><td>0.73</td><td>1.00</td><td>0.98</td><td>0.78</td><td>0.92</td><td>0.99</td></tr><tr><td>p value</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td></tr><tr><td>Different ?</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td></tr><tr><td rowspan="3">40%</td><td>s value</td><td>1.00</td><td>1.00</td><td>0.73</td><td>1.00</td><td>0.98</td><td>0.80</td><td>0.88</td><td>0.99</td></tr><tr><td>p value</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td></tr><tr><td>Different ?</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td></tr><tr><td rowspan="3">70%</td><td>s value</td><td>1.00</td><td>1.00</td><td>0.73</td><td>1.00</td><td>0.98</td><td>0.83</td><td>0.86</td><td>0.99</td></tr><tr><td>p value</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td></tr><tr><td>Different ?</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td></tr></tbody></table>

<table><caption>Table C.2: Anderson-Darling tests performed to assess whether the distributions are significantly different. **Top:** Comparison of the distributions of matched GMC-H II regions with their parent distributions. **Bottom:** Comparison of the distributions of matched GMC-H II regions for different minimum overlap percentages.</caption><caption>Matched GMC-H II regions versus Matched GMC-H II regions</caption><thead><tr><th rowspan="2">Minimum<br>Overlap<br>Percentage</th><th rowspan="2"></th><th rowspan="2">Size</th><th colspan="6">GMC properties</th></tr><tr><th>L<sub>CO</sub></th><th>σ<sub>v</sub></th><th>Σ<sub>mol</sub></th><th>σ<sub>0</sub></th><th>α<sub>vir</sub></th><th>T<sub>peak</sub></th><th>τ<sub>ff</sub></th></tr></thead><tbody><tr><td rowspan="3">10% vs. 40%</td><td>s value</td><td>0.20</td><td>0.09</td><td>0.05</td><td>0.13</td><td>0.06</td><td>0.07</td><td>0.11</td><td>0.17</td></tr><tr><td>p value</td><td>«1e-3</td><td>«1e-3</td><td>1.60e-02</td><td>«1e-3</td><td>5.20e-03</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td></tr><tr><td>Different ?</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td></tr><tr><td rowspan="3">10% vs. 70%</td><td>s value</td><td>0.35</td><td>0.22</td><td>0.13</td><td>0.24</td><td>0.10</td><td>0.11</td><td>0.20</td><td>0.32</td></tr><tr><td>p value</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>3.94e-03</td><td>2.05e-03</td><td>«1e-3</td><td>«1e-3</td></tr><tr><td>Different ?</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td></tr><tr><td rowspan="3">40% vs. 70%</td><td>s value</td><td>0.20</td><td>0.14</td><td>0.09</td><td>0.12</td><td>0.05</td><td>0.04</td><td>0.10</td><td>0.17</td></tr><tr><td>p value</td><td>«1e-3</td><td>«1e-3</td><td>3.98e-02</td><td>3.05e-03</td><td>4.86e-01</td><td>8.18e-01</td><td>1.40e-02</td><td>«1e-3</td></tr><tr><td>Different ?</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>no</td><td>yes</td><td>yes</td></tr></tbody></table>

<table><caption>Parent distribution versus matched GMC-H II regions</caption><thead><tr><th rowspan="2">Minimum<br>Overlap<br>Percentage</th><th rowspan="2"></th><th rowspan="2">Size</th><th colspan="6">GMC properties</th></tr><tr><th>L<sub>CO</sub></th><th>σ<sub>v</sub></th><th>Σ<sub>mol</sub></th><th>σ<sub>0</sub></th><th>α<sub>vir</sub></th><th>T<sub>peak</sub></th><th>τ<sub>ff</sub></th></tr></thead><tbody><tr><td rowspan="3">10%</td><td>s value</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td></tr><tr><td>c value</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td></tr><tr><td>p value</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td></tr><tr><td></td><td>Different ?</td><td>yes</td><td>yes</td><td>no</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td></tr><tr><td rowspan="3">40%</td><td>s value</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td></tr><tr><td>c value</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td></tr><tr><td>p value</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td></tr><tr><td></td><td>Different ?</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td></tr><tr><td rowspan="3">70%</td><td>s value</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td><td>»1e2</td></tr><tr><td>c value</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td></tr><tr><td>p value</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td></tr><tr><td></td><td>Different ?</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td></tr></tbody></table>

<table><caption>Matched GMC-H II regions versus Matched GMC-H II regions</caption><thead><tr><th rowspan="2">Minimum<br>Overlap<br>Percentage</th><th rowspan="2"></th><th rowspan="2">Size</th><th colspan="6">GMC properties</th></tr><tr><th>L<sub>CO</sub></th><th>σ<sub>v</sub></th><th>Σ<sub>mol</sub></th><th>σ<sub>0</sub></th><th>α<sub>vir</sub></th><th>T<sub>peak</sub></th><th>τ<sub>ff</sub></th></tr></thead><tbody><tr><td rowspan="3">10% vs. 40%</td><td>s value</td><td>»1e2</td><td>21.72</td><td>6.79</td><td>63.95</td><td>7.13</td><td>14.61</td><td>35.91</td><td>97.71</td></tr><tr><td>c value</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td></tr><tr><td>p value</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td></tr><tr><td></td><td>Different ?</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td></tr><tr><td rowspan="3">10% vs. 70%</td><td>s value</td><td>»1e2</td><td>48.69</td><td>13.61</td><td>55.43</td><td>8.62</td><td>8.24</td><td>37.88</td><td>»1e2</td></tr><tr><td>c value</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td></tr><tr><td>p value</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td><td>«1e-3</td></tr><tr><td></td><td>Different ?</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td></tr><tr><td rowspan="3">40% vs. 70%</td><td>s value</td><td>30.20</td><td>12.92</td><td>2.85</td><td>7.35</td><td>0.74</td><td>-0.50</td><td>6.15</td><td>20.06</td></tr><tr><td>c value</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td><td>1.96</td></tr><tr><td>p value</td><td>«1e-3</td><td>«1e-3</td><td>2.22e-02</td><td>«1e-3</td><td>1.63e-01</td><td>2.50e-01</td><td>1.38e-03</td><td>«1e-3</td></tr><tr><td></td><td>Different ?</td><td>yes</td><td>yes</td><td>yes</td><td>yes</td><td>no</td><td>no</td><td>yes</td><td>yes</td></tr></tbody></table>
<figure><img src="image_16.png" /><figcaption>Fig. C.1: Histograms of the *R*² coefficient between the different GMC properties and the Hα luminosity, after shuffling the Hα luminosity values, for three different minimum overlap percentage of the HII-GMC pairs: 10% for the left column, 40% for the middle one, and 70% for the right one. The solid lines show the mean of the distribution and the dotted lines the 1 standard deviation interval around the mean.</figcaption></figure>
<figure><img src="image_17.png" /><figcaption>Fig. C.1: Histograms of the R² coefficient between the different GMC properties and the Hα luminosity, after shuffling the Hα luminosity values, for three different minimum overlap percentage of the HII-GMC pairs: 10% for the left column, 40% for the middle one, and 70% for the right one. The solid lines show the mean of the distribution and the dotted lines the 1 standard deviation interval around the mean.</figcaption></figure>
<figure><img src="image_17.png" /><figcaption>Fig. C.2: Histograms of the R² coefficient between the different GMC properties and the Hα luminosity, after shuffling the Hα luminosity values while keeping the relationship between Hα luminosity and H II region radius values, for three different MOP of the H II–GMC pairs: 10% for the left column, 40% for the middle one, and 70% for the right one. The solid lines show the mean of the distribution and the dotted lines the 1 standard deviation interval around the mean.</figcaption></figure>
<figure><img src="image_18.png" /><figcaption>Fig. C.2: Histograms of the R² coefficient between the different GMC properties and the Hα luminosity, after shuffling the Hα luminosity values while keeping the relationship between Hα luminosity and H II region radius values, for three different MOP of the H II–GMC pairs: 10% for the left column, 40% for the middle one, and 70% for the right one. The solid lines show the mean of the distribution and the dotted lines the 1 standard deviation interval around the mean.</figcaption></figure>
<figure><img src="image_18.png" /></figure>

Fig. C.3: Bootstrap tests of the significance of the power-law index change with the MOP. The red line represents the power-law index obtained after matching with a 70% overlap, and the dashed lines its confidence interval. The blue distribution represents the power-law indices obtained after randomly sampling N pairs from the parent distribution (10% overlap), where N is the size of the 70% minimal overlap distribution. This random sampling has been performed 10000 times in order to obtain the distribution. This figure shows that the change in power-law index with the MOP cannot arise from a random sampling of the parent population, except for the surface density.
<figure><img src="image_19.png" /></figure>

Fig. C.3: Bootstrap tests of the significance of the power-law index change with the MOP. The red line represents the power-law index obtained after matching with a 70% overlap, and the dashed lines its confidence interval. The blue distribution represents the power-law indices obtained after randomly sampling *N* pairs from the parent distribution (10% overlap), where *N* is the size of the 70% minimal overlap distribution. This random sampling has been performed 10000 times in order to obtain the distribution. This figure shows that the change in power-law index with the MOP cannot arise from a random sampling of the parent population, except for the surface density.
## Appendix D: Supplemental figures about the variability of the properties of the matched GMC-HII regions as a function of the galaxy

Figures D.1 and D.2 respectively present the correlations coefficients and power-law indices of the correlation between the GMC peak brightness and the HII region Hα luminosity, as a function of different galaxy-wide properties. The properties in question are: the total number of matched GMC-HII regions, the galaxy's distance, inclination, stellar mass, total CO luminosity, total Hα luminosity, mean stellar density environment and distance from the main sequence. For these figures the MOP is 40%. Reassuringly, the galaxy's distance, inclination or number of matched GMC-HII regions does not have any impact on the found correlations.

To be more quantitative about the effect of inclination and metallicity, we computed a linear regression of the correlation coefficient R² (of the peak temperature correlation with Hα luminosity) against the galaxies inclinations, total CO luminosities and metallicities. This will allow us to check whether a galactic property has a significant impact on the correlations or not.

For the linear regression between R² and the galaxy inclination, the resulting correlation coefficient and slope are respectively 0.07 ± 0.08 and 0.004 ± 0.009. These numbers are consistent with 0, so the galaxy inclination has no impact on the correlations. For the linear regression between R² and the galaxy metallicity, the resulting correlation coefficient and slope are respectively 0.15 ± 0.18 and 0.89 ± 1.15. These numbers are also consistent with 0, so the galaxy metallicity has no impact on the correlations. For comparison, the linear regression between R² and the galaxy's total CO luminosity yields a correlation coefficient and a slope of respectively 0.32 ± 0.13 and 0.16 ± 0.06.

<table><caption>Table D.1: Correlation properties (R² coefficient and power-law index) for various GMC properties as a function of the Hα luminosity for each galaxy in the sample. The minimum overlap percentage used for the matching is 40%. The galaxies are sorted by decreasing R² coefficient for each individual sub-table.</caption><thead><tr><th colspan="3">Molecular Mass</th><th colspan="3">Surface density</th><th colspan="3">Peak Temperature</th><th colspan="3">Characteristic Turbulent Linewidth</th></tr><tr><th>Galaxy</th><th>R<sup>2</sup></th><th>slope</th><th>Galaxy</th><th>R<sup>2</sup></th><th>slope</th><th>Galaxy</th><th>R<sup>2</sup></th><th>slope</th><th>Galaxy</th><th>R<sup>2</sup></th><th>slope</th></tr></thead><tbody><tr><td>NGC 4535</td><td>0.65</td><td>0.51</td><td>NGC 3627</td><td>0.37</td><td>0.34</td><td>NGC 1672</td><td>0.71</td><td>0.43</td><td>NGC 3627</td><td>0.26</td><td>0.10</td></tr><tr><td>NGC 1672</td><td>0.60</td><td>0.59</td><td>NGC 4535</td><td>0.35</td><td>0.34</td><td>NGC 4535</td><td>0.69</td><td>0.30</td><td>NGC 4321</td><td>0.23</td><td>0.15</td></tr><tr><td>NGC 4321</td><td>0.54</td><td>0.55</td><td>NGC 4321</td><td>0.25</td><td>0.30</td><td>NGC 4321</td><td>0.57</td><td>0.34</td><td>NGC 1566</td><td>0.23</td><td>0.15</td></tr><tr><td>NGC 3351</td><td>0.51</td><td>0.47</td><td>NGC 1566</td><td>0.23</td><td>0.32</td><td>NGC 3627</td><td>0.45</td><td>0.26</td><td>NGC 4254</td><td>0.17</td><td>0.15</td></tr><tr><td>NGC 1566</td><td>0.48</td><td>0.57</td><td>NGC 0628</td><td>0.15</td><td>0.20</td><td>NGC 3351</td><td>0.44</td><td>0.28</td><td>NGC 1433</td><td>0.12</td><td>0.10</td></tr><tr><td>NGC 0628</td><td>0.43</td><td>0.46</td><td>NGC 1672</td><td>0.13</td><td>0.21</td><td>NGC 1566</td><td>0.41</td><td>0.31</td><td>NGC 1300</td><td>0.12</td><td>0.10</td></tr><tr><td>NGC 3627</td><td>0.43</td><td>0.46</td><td>NGC 3351</td><td>0.11</td><td>0.22</td><td>NGC 1385</td><td>0.38</td><td>0.24</td><td>NGC 1512</td><td>0.11</td><td>0.16</td></tr><tr><td>NGC 4254</td><td>0.42</td><td>0.59</td><td>NGC 4254</td><td>0.11</td><td>0.24</td><td>NGC 1365</td><td>0.34</td><td>0.16</td><td>NGC 4535</td><td>0.10</td><td>0.09</td></tr><tr><td>NGC 1385</td><td>0.42</td><td>0.38</td><td>NGC 5068</td><td>0.10</td><td>0.18</td><td>NGC 1512</td><td>0.34</td><td>0.15</td><td>NGC 1672</td><td>0.09</td><td>0.07</td></tr><tr><td>NGC 4303</td><td>0.38</td><td>0.47</td><td>NGC 1512</td><td>0.09</td><td>0.15</td><td>NGC 4303</td><td>0.33</td><td>0.29</td><td>NGC 1365</td><td>0.08</td><td>0.07</td></tr><tr><td>NGC 1300</td><td>0.37</td><td>0.37</td><td>NGC 1300</td><td>0.06</td><td>0.14</td><td>NGC 0628</td><td>0.32</td><td>0.19</td><td>NGC 0628</td><td>0.07</td><td>0.11</td></tr><tr><td>NGC 1512</td><td>0.36</td><td>0.24</td><td>NGC 1385</td><td>0.05</td><td>0.13</td><td>NGC 4254</td><td>0.32</td><td>0.38</td><td>NGC 4303</td><td>0.05</td><td>0.07</td></tr><tr><td>NGC 1365</td><td>0.35</td><td>0.33</td><td>NGC 4303</td><td>0.05</td><td>0.17</td><td>NGC 1300</td><td>0.31</td><td>0.16</td><td>NGC 2835</td><td>0.05</td><td>0.08</td></tr><tr><td>NGC 2835</td><td>0.25</td><td>0.21</td><td>NGC 2835</td><td>0.04</td><td>0.11</td><td>NGC 1087</td><td>0.16</td><td>0.14</td><td>NGC 1385</td><td>0.04</td><td>0.08</td></tr><tr><td>NGC 1087</td><td>0.17</td><td>0.21</td><td>NGC 1087</td><td>0.04</td><td>0.12</td><td>NGC 2835</td><td>0.15</td><td>0.08</td><td>NGC 5068</td><td>0.03</td><td>0.08</td></tr><tr><td>NGC 5068</td><td>0.15</td><td>0.18</td><td>NGC 1365</td><td>0.02</td><td>0.08</td><td>NGC 5068</td><td>0.06</td><td>0.07</td><td>NGC 1087</td><td>0.01</td><td>0.04</td></tr><tr><td>NGC 1433</td><td>0.10</td><td>0.13</td><td>NGC 1433</td><td>0.00</td><td>-0.03</td><td>NGC 1433</td><td>0.06</td><td>0.05</td><td>NGC 3351</td><td>0.00</td><td>0.02</td></tr></tbody></table>
## Appendix D: Supplemental figures about the variability of the properties of the matched GMC-HII regions as a function of the galaxy

Figures D.1 and D.2 respectively present the correlations coefficients and power-law indices of the correlation between the GMC peak brightness and the HII region Hα luminosity, as a function of different galaxy-wide properties. The properties in question are: the total number of matched GMC-HII regions, the galaxy's distance, inclination, stellar mass, total CO luminosity, total Hα luminosity, mean stellar density environment and distance from the main sequence. For these figures the MOP is 40%. Reassuringly, the galaxy's distance, inclination or number of matched GMC-HII regions does not have any impact on the found correlations.

To be more quantitative about the effect of inclination and metallicity, we computed a linear regression of the correlation coefficient R² (of the peak temperature correlation with Hα luminosity) against the galaxies inclinations, total CO luminosities and metallicities. This will allow us to check whether a galactic property has a significant impact on the correlations or not.

For the linear regression between R² and the galaxy inclination, the resulting correlation coefficient and slope are respectively 0.07 ± 0.08 and 0.004 ± 0.009. These numbers are consistent with 0, so the galaxy inclination has no impact on the correlations. For the linear regression between R² and the galaxy metallicity, the resulting correlation coefficient and slope are respectively 0.15 ± 0.18 and 0.89 ± 1.15. These numbers are also consistent with 0, so the galaxy metallicity has no impact on the correlations. For comparison, the linear regression between R² and the galaxy's total CO luminosity yields a correlation coefficient and a slope of respectively 0.32 ± 0.13 and 0.16 ± 0.06.

<table><caption>Table D.1: Correlation properties (R² coefficient and power-law index) for various GMC properties as a function of the Hα luminosity for each galaxy in the sample. The minimum overlap percentage used for the matching is 40%. The galaxies are sorted by decreasing R² coefficient for each individual sub-table.</caption><thead><tr><th colspan="3">Molecular Mass</th><th colspan="3">Surface density</th><th colspan="3">Peak Temperature</th><th colspan="3">Characteristic Turbulent Linewidth</th></tr><tr><th>Galaxy</th><th>R<sup>2</sup></th><th>slope</th><th>Galaxy</th><th>R<sup>2</sup></th><th>slope</th><th>Galaxy</th><th>R<sup>2</sup></th><th>slope</th><th>Galaxy</th><th>R<sup>2</sup></th><th>slope</th></tr></thead><tbody><tr><td>NGC 4535</td><td>0.65</td><td>0.51</td><td>NGC 3627</td><td>0.37</td><td>0.34</td><td>NGC 1672</td><td>0.71</td><td>0.43</td><td>NGC 3627</td><td>0.26</td><td>0.10</td></tr><tr><td>NGC 1672</td><td>0.60</td><td>0.59</td><td>NGC 4535</td><td>0.35</td><td>0.34</td><td>NGC 4535</td><td>0.69</td><td>0.30</td><td>NGC 4321</td><td>0.23</td><td>0.15</td></tr><tr><td>NGC 4321</td><td>0.54</td><td>0.55</td><td>NGC 4321</td><td>0.25</td><td>0.30</td><td>NGC 4321</td><td>0.57</td><td>0.34</td><td>NGC 1566</td><td>0.23</td><td>0.15</td></tr><tr><td>NGC 3351</td><td>0.51</td><td>0.47</td><td>NGC 1566</td><td>0.23</td><td>0.32</td><td>NGC 3627</td><td>0.45</td><td>0.26</td><td>NGC 4254</td><td>0.17</td><td>0.15</td></tr><tr><td>NGC 1566</td><td>0.48</td><td>0.57</td><td>NGC 0628</td><td>0.15</td><td>0.20</td><td>NGC 3351</td><td>0.44</td><td>0.28</td><td>NGC 1433</td><td>0.12</td><td>0.10</td></tr><tr><td>NGC 0628</td><td>0.43</td><td>0.46</td><td>NGC 1672</td><td>0.13</td><td>0.21</td><td>NGC 1566</td><td>0.41</td><td>0.31</td><td>NGC 1300</td><td>0.12</td><td>0.10</td></tr><tr><td>NGC 3627</td><td>0.43</td><td>0.46</td><td>NGC 3351</td><td>0.11</td><td>0.22</td><td>NGC 1385</td><td>0.38</td><td>0.24</td><td>NGC 1512</td><td>0.11</td><td>0.16</td></tr><tr><td>NGC 4254</td><td>0.42</td><td>0.59</td><td>NGC 4254</td><td>0.11</td><td>0.24</td><td>NGC 1365</td><td>0.34</td><td>0.16</td><td>NGC 4535</td><td>0.10</td><td>0.09</td></tr><tr><td>NGC 1385</td><td>0.42</td><td>0.38</td><td>NGC 5068</td><td>0.10</td><td>0.18</td><td>NGC 1512</td><td>0.34</td><td>0.15</td><td>NGC 1672</td><td>0.09</td><td>0.07</td></tr><tr><td>NGC 4303</td><td>0.38</td><td>0.47</td><td>NGC 1512</td><td>0.09</td><td>0.15</td><td>NGC 4303</td><td>0.33</td><td>0.29</td><td>NGC 1365</td><td>0.08</td><td>0.07</td></tr><tr><td>NGC 1300</td><td>0.37</td><td>0.37</td><td>NGC 1300</td><td>0.06</td><td>0.14</td><td>NGC 0628</td><td>0.32</td><td>0.19</td><td>NGC 0628</td><td>0.07</td><td>0.11</td></tr><tr><td>NGC 1512</td><td>0.36</td><td>0.24</td><td>NGC 1385</td><td>0.05</td><td>0.13</td><td>NGC 4254</td><td>0.32</td><td>0.38</td><td>NGC 4303</td><td>0.05</td><td>0.07</td></tr><tr><td>NGC 1365</td><td>0.35</td><td>0.33</td><td>NGC 4303</td><td>0.05</td><td>0.17</td><td>NGC 1300</td><td>0.31</td><td>0.16</td><td>NGC 2835</td><td>0.05</td><td>0.08</td></tr><tr><td>NGC 2835</td><td>0.25</td><td>0.21</td><td>NGC 2835</td><td>0.04</td><td>0.11</td><td>NGC 1087</td><td>0.16</td><td>0.14</td><td>NGC 1385</td><td>0.04</td><td>0.08</td></tr><tr><td>NGC 1087</td><td>0.17</td><td>0.21</td><td>NGC 1087</td><td>0.04</td><td>0.12</td><td>NGC 2835</td><td>0.15</td><td>0.08</td><td>NGC 5068</td><td>0.03</td><td>0.08</td></tr><tr><td>NGC 5068</td><td>0.15</td><td>0.18</td><td>NGC 1365</td><td>0.02</td><td>0.08</td><td>NGC 5068</td><td>0.06</td><td>0.07</td><td>NGC 1087</td><td>0.01</td><td>0.04</td></tr><tr><td>NGC 1433</td><td>0.10</td><td>0.13</td><td>NGC 1433</td><td>0.00</td><td>-0.03</td><td>NGC 1433</td><td>0.06</td><td>0.05</td><td>NGC 3351</td><td>0.00</td><td>0.02</td></tr></tbody></table>
<figure><img src="image_19.png" /></figure>

Fig. D.1: $R^2$ coefficients of the temperature at peak with the H$\alpha$ luminosity considering H II region/GMC pairs from each galaxy in the sample separately. **Top from left to right:** $R^2$ coefficients versus the number of matched H II regions and GMCs, distance, inclination and total stellar mass of the host galaxy. **Bottom from left to right:** $R^2$ coefficients versus the galaxy's CO luminosity, total H$\alpha$ luminosity, average stellar surface density within a 500 pc radius around each of the H II region/GMC pairs and the galaxy's offset from the main sequence. The red dashed line shows the global $R^2$ coefficient from Sect. 5.

<figure><img src="image_20.png" /></figure>

Fig. D.2: Same as figure D.1 but the $R^2$ values are replaced by the power-law indices.
<figure><img src="image_20.png" /></figure>

Fig. D.1: $R^2$ coefficients of the temperature at peak with the H$\alpha$ luminosity considering H II region/GMC pairs from each galaxy in the sample separately. **Top from left to right:** $R^2$ coefficients versus the number of matched H II regions and GMCs, distance, inclination and total stellar mass of the host galaxy. **Bottom from left to right:** $R^2$ coefficients versus the galaxy's CO luminosity, total H$\alpha$ luminosity, average stellar surface density within a 500 pc radius around each of the H II region/GMC pairs and the galaxy's offset from the main sequence. The red dashed line shows the global $R^2$ coefficient from Sect. 5.

<figure><img src="image_21.png" /></figure>

Fig. D.2: Same as figure D.1 but the $R^2$ values are replaced by the power-law indices.
## Appendix E: Supplemental information about the covariances of GMC properties

The evolution of the correlations of the GMC properties with the Hα luminosity of the associated H II regions show two different trends. It is well known that GMC properties covary through Larson's and Heyer's relationships (Heyer & Brunt 2004; Larson 1981). We ask here which part of the uncovered trends are controlled by these covariances of the GMC properties.

Figure E.1 shows the joint PDFs of the quantities that are known to covary in our sample (Rosolowsky et al. 2021).

**Larson's first relationship** links the GMC velocity dispersion to its radius through

$$ \sigma_v \propto R^{0.45 \pm 0.02}. \qquad (E.1) $$

**Larson's second relationship** links the GMC velocity dispersion to its mass through

$$ \sigma_v \propto M_{CO}^{0.27 \pm 0.01}. \qquad (E.2) $$

**Heyer's relationship** links the characteristic turbulent linewidth to the surface density through

$$ \sigma_0 \propto \Sigma_{\text{gas}}^{0.49 \pm 0.02}. \qquad (E.3) $$

Moreover, Fig. E.1 shows that all these power-law relations are stable within the credibility intervals when increasing the MOP. Unlike the correlations between different GMC properties and the H II region luminosity, Larson's and Heyer's relationships as well as the correlation between the CO peak temperature and the molecular surface density are insensitive to the minimum overlap percentage, especially in terms of power-law index.

The similar evolution with the MOP of the correlations of the molecular surface density, CO peak temperature, and characteristic turbulent linewidth with the Hα luminosity leads us to ask whether there is an additional covariation between the CO peak temperature and the molecular surface density. Indeed, Fig. E.1 suggests that there is a relationship, even though imperfect, through

$$ T_{\text{peak}} \propto \Sigma_{\text{gas}}^{0.38 \pm 0.01}. \qquad (E.4) $$

Figure E.2 shows the evolution of the joint PDF of the CO peak temperature and the GMC mass with the minimum overlap percentage. We find a positive correlation

$$ T_{\text{peak}} \propto M_{\text{CO}}^{1.07 \pm 0.04}, \qquad (E.5) $$

with a R² value of 0.27. This positive correlation implies that the two behaviors uncovered between the GMC properties and the Hα luminosities are independent. Indeed, an anticorrelation between the CO peak temperature and the GMC mass is needed to explain the shift of the marginalized PDF of these two quantities in opposite directions. In other words, the presence of an H II region more or less close to its parent GMC modifies some of the intrinsic scaling relationships between GMC properties.
## Appendix E: Supplemental information about the covariations of GMC properties

The evolution of the correlations of the GMC properties with the Hα luminosity of the associated H II regions show two different trends. It is well known that GMC properties covary through Larson's and Heyer's relationships (Heyer & Brunt 2004; Larson 1981). We ask here which part of the uncovered trends are controlled by these covariations of the GMC properties.

Figure E.1 shows the joint PDFs of the quantities that are known to covary in our sample (Rosolowsky et al. 2021).

**Larson's first relationship** links the GMC velocity dispersion to its radius through

$$ \sigma_v \propto R^{0.45 \pm 0.02}. \qquad (E.1) $$

**Larson's second relationship** links the GMC velocity dispersion to its mass through

$$ \sigma_v \propto M_{CO}^{0.27 \pm 0.01}. \qquad (E.2) $$

**Heyer's relationship** links the characteristic turbulent linewidth to the surface density through

$$ \sigma_0 \propto \Sigma_{\text{gas}}^{0.49 \pm 0.02}. \qquad (E.3) $$

Moreover, Fig. E.1 shows that all these power-law relations are stable within the credibility intervals when increasing the MOP. Unlike the correlations between different GMC properties and the H II region luminosity, Larson's and Heyer's relationships as well as the correlation between the CO peak temperature and the molecular surface density are insensitive to the minimum overlap percentage, especially in terms of power-law index.

The similar evolution with the MOP of the correlations of the molecular surface density, CO peak temperature, and characteristic turbulent linewidth with the Hα luminosity leads us to ask whether there is an additional covariation between the CO peak temperature and the molecular surface density. Indeed, Fig. E.1 suggests that there is a relationship, even though imperfect, through

$$ T_{\text{peak}} \propto \Sigma_{\text{gas}}^{0.38 \pm 0.01}. \qquad (E.4) $$

Figure E.2 shows the evolution of the joint PDF of the CO peak temperature and the GMC mass with the minimum overlap percentage. We find a positive correlation

$$ T_{\text{peak}} \propto M_{\text{CO}}^{1.07 \pm 0.04}, \qquad (E.5) $$

with a R² value of 0.27. This positive correlation implies that the two behaviors uncovered between the GMC properties and the Hα luminosities are independent. Indeed, an anticorrelation between the CO peak temperature and the GMC mass is needed to explain the shift of the marginalized PDF of these two quantities in opposite directions. In other words, the presence of an H II region more or less close to its parent GMC modifies some of the intrinsic scaling relationships between GMC properties.
<figure><img src="image_21.png" /></figure>

Fig. E.1: Evolution of the Larson, Heyer, and peak temperature versus surface density correlations for all the GMCs in the sample (first columns) and three different minimum overlap percentage of the H II– GMC pairs: 10% for the second column, 40% for the third one, and 70% for the fourth one. The solid and dotted black lines show the power-law fits and their uncertainty, respectively. The dashed lines show the ±3σ levels from the fitted line. The power-law parameters are displayed on the bottom-right corner of each panel. The red solid lines show the power-law fit for the parent population (all GMCs in the sample).
<figure><img src="image_22.png" /></figure>

Fig. E.1: Evolution of the Larson, Heyer, and peak temperature versus surface density correlations for all the GMCs in the sample (first columns) and three different minimum overlap percentage of the H II– GMC pairs: 10% for the second column, 40% for the third one, and 70% for the fourth one. The solid and dotted black lines show the power-law fits and their uncertainty, respectively. The dashed lines show the ±3σ levels from the fitted line. The power-law parameters are displayed on the bottom-right corner of each panel. The red solid lines show the power-law fit for the parent population (all GMCs in the sample).
<figure><img src="image_22.png" /></figure>

Fig. E.2: Evolution of the joint PDF between the peak temperature (top) and the characteristic turbulent linewidth (bottom), and the molecular mass for all the GMCs in the sample (first columns) and three different MOPs of the H II–GMC pairs: 10% for the second column, 40% for the third one, and 70% for the fourth. The reminder of the layout is similar to Fig. E.1.
<figure><img src="image_23.png" /></figure>

Fig. E.2: Evolution of the joint PDF between the peak temperature (top) and the characteristic turbulent linewidth (bottom), and the molecular mass for all the GMCs in the sample (first columns) and three different MOPs of the H II–GMC pairs: 10% for the second column, 40% for the third one, and 70% for the fourth. The reminder of the layout is similar to Fig. E.1.