Table 6 Calculations and error Report.

Error metric	Dataset	CO₂				CH₄
		Random forst	CatBoost	Extra trees	AdaBoost	Random forest	CatBoost	Extera trees	AdaBoost
R ²	Train	0.9968	0.9999	1.0000	0.9985	0.9971	0.9985	0.9998	0.9970
	Test	0.9903	0.9968	0.9946	0.9877	0.9796	0.9911	0.9873	0.9742
	Total	0.9947	0.9989	0.9982	0.9950	0.9923	0.9965	0.9963	0.9907
RMSE	Train	0.2709	0.0519	0.0243	0.1843	0.0688	0.0487	0.0183	0.0702
	Test	0.5052	0.2921	0.3756	0.5681	0.1722	0.1140	0.1359	0.1936
	Total	0.3579	0.1660	0.2070	0.3476	0.1185	0.0746	0.0760	0.1213
MAE	Train	0.1611	0.0364	0.0095	0.1224	0.0378	0.0346	0.0074	0.0487
	Test	0.3381	0.2148	0.2716	0.3934	0.0980	0.0726	0.0781	0.1145
	Total	0.2144	0.0901	0.0883	0.2039	0.0558	0.0460	0.0286	0.0685
MAPE	Train	8.8524	3.4402	0.8646	28.0617	6.3432	5.8858	0.9053	12.2420
	Test	22.5793	17.8237	19.6057	32.9776	20.6930	25.2515	22.2115	31.1199
	Total	12.9831	7.7684	6.5042	29.5410	10.6515	11.7000	7.3021	17.9097

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