# Evaluating Machine Learning and Remote Sensing in Monitoring NO2 Emission of Power Plants
## 4 Experiments and Results
### Improved ML Models
#### 4.3.3 RF Results
\begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \hline \multicolumn{2}{c}{**Results**} & \multicolumn{8}{c}{**Hyperparameters**} \\ \hline \multirow{2}{*}{**Number**} & \multirow{2}{*}{**Experiments**} & **Mean** & **Mean** & **Root Mean** & **Residual** & **Error** & **True** & **Max** & **Min** \\  & & **Average** & **Error** & **Error** & **Error** & **Error** & **Error** & **Rate** & **Depth** & **Samples** \\ \hline \multirow{2}{*}{1} & RF [Alabama Power Plant & \multirow{2}{*}{0.0795} & \multirow{2}{*}{0.0110} & \multirow{2}{*}{0.1050} & \multirow{2}{*}{0.0150} & \multirow{2}{*}{0.5361} & \multirow{2}{*}{1000} & \multirow{2}{*}{20} & \multirow{2}{*}{2} \\  & TROPOMI input only] & & & & & & & & & \\  & RF [Alabama Power Plant & \multirow{2}{*}{0.0525} & \multirow{2}{*}{0.0050} & \multirow{2}{*}{0.0711} & \multirow{2}{*}{0.0101} & \multirow{2}{*}{0.3632} & \multirow{2}{*}{1000} & \multirow{2}{*}{15} & \multirow{2}{*}{2} \\  & TROPOMI/MERRA-2/Date inputs & & & & & & & & & \\  & RF GridSearch Best Params & & & & & & & & \\
3 & [Alabama Power Plant TROPOMI & \multirow{2}{*}{0.0484} & \multirow{2}{*}{0.0044} & \multirow{2}{*}{0.0666} & \multirow{2}{*}{0.0095} & \multirow{2}{*}{0.3401} & \multirow{2}{*}{1000} & \multirow{2}{*}{20} \\  & input only] & & & & & & & & \\  & RF GridSearch Best Params & & & & & & & & \\
4 & [Alabama Power Plant & \multirow{2}{*}{0.0488} & \multirow{2}{*}{0.0044} & \multirow{2}{*}{0.0667} & \multirow{2}{*}{0.0095} & \multirow{2}{*}{0.3410} & \multirow{2}{*}{1000} & \multirow{2}{*}{110} \\  & TROPOMI/MERRA-2 & & & & & & & & \\  & [Alabama Power Plant & \multirow{2}{*}{0.0509} & \multirow{2}{*}{0.0049} & \multirow{2}{*}{0.0705} & \multirow{2}{*}{0.0100} & \multirow{2}{*}{0.3604} & \multirow{2}{*}{1000} & \multirow{2}{*}{70} \\  & TROPOMI/MERRA-2 & & & & & & & & \\  & Morthy/MCD19A2/Date inputs] & & & & & & & & \\  & RF GridSearch Best Params & & & & & & & & \\
6 & [Alabama Power Plant & \multirow{2}{*}{0.0582} & \multirow{2}{*}{0.006} & \multirow{2}{*}{0.077} & \multirow{2}{*}{0.011} & \multirow{2}{*}{0.396} & \multirow{2}{*}{800} & \multirow{2}{*}{100} \\  & TROPOMI/MERRA-2 Daily/ & & & & & & & & \\  & [Alabama Power Plant & \multirow{2}{*}{0.059} & \multirow{2}{*}{0.006} & \multirow{2}{*}{0.078} & \multirow{2}{*}{0.011} & \multirow{2}{*}{0.399} & \multirow{2}{*}{800} & \multirow{2}{*}{30} \\  & TROPOMI/MERRA-2 & & & & & & & & \\  & Daily/MCD19A2/Date inputs] & & & & & & & & \\  & RF GridSearch Best Params & & & & & & & & \\
8 & [Alabama Power Plant MERRRA-2 & \multirow{2}{*}{0.058} & \multirow{2}{*}{0.006} & \multirow{2}{*}{0.077} & \multirow{2}{*}{0.011} & \multirow{2}{*}{0.396} & \multirow{2}{*}{800} & \multirow{2}{*}{5} \\  & Daily/Date inputs] & & & & & & & & \\  & RF GridSearch Best Params & & & & & & & & \\
9 & [Alabama Power Plant & \multirow{2}{*}{0.064} & \multirow{2}{*}{0.007} & \multirow{2}{*}{0.085} & \multirow{2}{*}{0.012} & \multirow{2}{*}{0.436} & \multirow{2}{*}{800} & \multirow{2}{*}{10} \\  & TROPOMI/MERRA-2 Weekly/ & & & & & & & & \\  & TROPOMI & \multirow{2}{*}{0.064} & \multirow{2}{*}{0.007} & \multirow{2}{*}{0.085} & \multirow{2}{*}{0.012} & \multirow{2}{*}{0.438} & \multirow{2}{*}{800} & \multirow{2}{*}{90} \\  & RF GridSearch Best Params & & & & & & & \\
10 & [Alabama Power Plant & \multirow{2}{*}{0.064} & \multirow{2}{*}{0.007} & \multirow{2}{*}{0.085} & \multirow{2}{*}{0.012} & \multirow{2}{*}{0.438} & \multirow{2}{*}{800} & \multirow{2}{*}{90} \\  & TROPOMI/MERRA-2 & & & & & & & & \\
11 & Power Plants Average & \multirow{2}{*}{0.0157} & \multirow{2}{*}{0.0003} & \multirow{2}{*}{0.0198} & \multirow{2}{*}{0.0021} & \multirow{2}{*}{0.2530} & \multirow{2}{*}{400} & \multirow{2}{*}{80} & \multirow{2}{*}{2} \\  & TROPOMI only] & & & & & & & \\  & RF GridSearch Best Params & \multirow{2}{*}{0.0099} & \multirow{2}{*}{0.0001} & \multirow{2}{*}{0.0125} & \multirow{2}{*}{0.0013} & \multirow{2}{*}{0.1592} & \multirow{2}{*}{1800} & \multirow{2}{*}{80} & \multirow{2}{*}{2} \\
12 & Power Plants Average & \multirow{2}{*}{0.0099} & \multirow{2}{*}{0.0001} & \multirow{2}{*}{0.0125} & \multirow{2}{*}{0.0013} & \multirow{2}{*}{0.1592} & \multirow{2}{*}{1800} & \multirow{2}{*}{80} \\  & TROPOMI/Date inputs] & & & & & & & & \\ \hline \hline \end{tabular}
\end{table}