Response of L(CH₄)
Period	L(CH₄)	L(GDPP)	L(GDPP)²	L(CPIN)	L(EUP)	L(OIL)	L(TOP)	L(FDI)
1	0.084	0.000	0.000	0.000	0.000	0.000	0.000	0.000
2	0.072	0.006	0.030	−0.014	0.022	0.022	0.022	−0.017
3	0.063	−0.009	0.013	0.007	0.014	0.011	0.028	−0.020
4	0.060	0.009	0.018	0.011	0.012	0.005	0.036	−0.026
5	0.070	0.005	0.001	−0.006	0.013	0.008	0.028	−0.034
6	0.060	0.006	−0.001	0.008	0.010	0.016	0.041	−0.032
7	0.062	0.006	−0.013	0.005	0.009	0.017	0.040	−0.026
8	0.064	0.003	−0.012	0.005	0.015	0.023	0.049	−0.031
9	0.063	0.004	−0.019	0.008	0.014	0.026	0.052	−0.028
10	0.065	0.004	−0.021	0.007	0.018	0.026	0.057	−0.025
Response of L(N₂O)
Period	L(N₂O)	L(GDPP)	L(GDPP)²	L(CPIN)	L(EUP)	L(OIL)	L(TOP)	L(FDI)
1	0.124	0.000	0.000	0.000	0.000	0.000	0.000	0.000
2	0.113	−0.006	0.036	−0.037	0.025	0.034	0.035	−0.042
3	0.096	−0.017	0.020	−0.006	0.012	0.008	0.042	−0.054
4	0.086	0.027	0.030	0.002	−0.013	−0.011	0.068	−0.067
5	0.100	0.029	0.019	−0.030	−0.004	0.006	0.045	−0.092
6	0.094	0.041	0.019	−0.011	−0.012	0.014	0.077	−0.095
7	0.081	0.054	0.000	−0.015	−0.010	0.019	0.078	−0.077
8	0.094	0.049	−0.002	−0.020	0.001	0.031	0.090	−0.078
9	0.090	0.053	−0.003	−0.012	0.000	0.037	0.101	−0.075
10	0.092	0.054	−0.007	−0.017	0.007	0.032	0.107	−0.067