Table 5.

MAPE of models (%).

	PM10	PM2.5	NO2	SO2	O3	CO	Average
LSTM	7.54	17.25	12.63	15.73	9.05	13.53	12.62
IG-LSTM	8.30	17.85	5.31	11.17	17.51	4.35	10.75
Wavelet-LSTM	7.78	12.59	10.73	11.02	11.77	10.37	10.71
Hybrid model	8.84	7.59	4.83	9.69	7.80	5.96	7.45