Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Rank | Airport | Total Passengers | % Change 2005/2006 | International Passengers | Domestic Passengers | Transit Passengers | Aircraft Movements | Freight (Metric Tonnes) |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1.0 | London Heathrow | 67527923.0 | 0.6% | 61345841.0 | 5993386.0 | 188696.0 | 477048.0 | 1263128.0 |
| 2.0 | London Gatwick | 34163579.0 | 4.2% | 30018783.0 | 4061562.0 | 83234.0 | 263363.0 | 211857.0 |
| 3.0 | London Stansted | 23687013.0 | 7.7% | 21002260.0 | 2678092.0 | 6661.0 | 206693.0 | 224312.0 |
| 4.0 | Manchester | 22442855.0 | 0.2% | 18601604.0 | 3522158.0 | 319093.0 | 229729.0 | 148957.0 |
| 5.0 | London Luton | 9425908.0 | 3.0% | 7875084.0 | 1539745.0 | 11079.0 | 116131.0 | 17993.0 |
| 6.0 | Birmingham Airport | 9147384.0 | 2.5% | 7532792.0 | 1523212.0 | 91380.0 | 119490.0 | 14681.0 |
| 7.0 | Glasgow International | 8848755.0 | 0.6% | 4245338.0 | 4575124.0 | 28293.0 | 110034.0 | 6289.0 |
| 8.0 | Edinburgh | 8611345.0 | 1.8% | 2743220.0 | 5863431.0 | 4694.0 | 126914.0 | 36389.0 |
| 9.0 | Bristol | 5757963.0 | 9.6% | 4297696.0 | 1412526.0 | 47741.0 | 84583.0 | 32.0 |
| 10.0 | Newcastle | 5431976.0 | 4.4% | 3624228.0 | 1783134.0 | 24614.0 | 81655.0 | 306.0 |
| 11.0 | Belfast International | 5038692.0 | 4.4% | 1533065.0 | 3482199.0 | 23428.0 | 77652.0 | 38417.0 |
| 12.0 | Liverpool | 4963776.0 | 12.5% | 4078245.0 | 884215.0 | 1316.0 | 91263.0 | 5724.0 |
| 13.0 | East Midlands | 4727996.0 | 13.0% | 4048071.0 | 672748.0 | 7177.0 | 88592.0 | 272303.0 |
| 14.0 | Aberdeen | 3164042.0 | 10.9% | 1325989.0 | 1836635.0 | 1418.0 | 116971.0 | 4022.0 |
| 15.0 | Leeds Bradford | 2792686.0 | 7.0% | 2154982.0 | 632235.0 | 5469.0 | 66921.0 | 101.0 |
| 16.0 | Glasgow Prestwick | 2397412.0 | 0.4% | 1824523.0 | 570405.0 | 2484.0 | 48189.0 | 28537.0 |
| 17.0 | London City | 2358184.0 | 18.1% | 1738346.0 | 619813.0 | 25.0 | 79436.0 | 0.0 |
| 18.0 | Belfast City | 2105769.0 | 5.9% | 51948.0 | 2053649.0 | 172.0 | 39411.0 | 827.0 |
| 19.0 | Cardiff | 2024428.0 | 13.8% | 1628245.0 | 364852.0 | 31331.0 | 42055.0 | 2212.0 |
Question:
 how many airport with rank being 4
Answer:
1.0