LNIWATER	LNIGAS	LNISOLlD	LNRGDP
9.477309403	6.612041	5.784686	6.709304
9.6164053	6.760415	6.198479	6.828712
9.596486736	6.797885	6.293419	6.959399
9.641018283	6.88897	6.308098	7.205635
9.694678273	6.922072	5.877736	7.308543
9.648659817	6.977272	5.963579	7.446001
9.726989009	7.151799	5.988961	7.650169
9.832206351	7.33165	6.054439	7.814803
9.728776959	7.306202	6.156555	7.994295
9.794955346	7.367424	6.204558	8.26565
9.852246888	7.458521	6.400257	8.455531
9.736724335	7.391452	6.331502	8.537388
9.762845223	7.465226	6.452049	8.673855
9.87678417	7.489731	6.527958	8.728102
9.73619844	7.516814	6.554418	8.77075
9.639873507	7.572297	6.576748	8.905444
9.728940099	7.763361	6.664409	8.980298
9.706612201	7.828914	6.915723	9.04275
9.706072662	7.984088	6.991545	9.192991
9.779680157	8.245253	7.028733	9.335827
9.906084178	8.408578	7.166112	9.480978
9.931005439	8.527731	7.365958	9.615805
9.950371138	8.665132	7.66699	9.74091
10.03779989	8.724879	7.799019	9.898123

这些是经过取对数后的数据，如何用这些数据做脉冲响应函数分析，还有就是做ADF检验、协整检验、格兰杰检验时滞后期如何去选择，多谢高人指点