Panel data 的格式怎么输入啊？比如我是5年9个地区的数据，那么我输入后怎么不执行呢？我错在哪里了？请多多赐教啊？
序列号  时期  产出 投入1 投入2
1 1 6.963256209 14.2902293 7.246539127
2 1 6.959939676 14.28643127 7.247073462
3 1 7.00475494 14.28495991 7.248390268
4 1 7.060673771 14.28058996 7.246938124
5 1 7.194639533 14.28233251 7.247707169
1 2 3.282211122 10.5754877 3.60359386
2 2 3.271172216 10.57390332 3.60359386
3 2 3.267745986 10.57128359 3.60359386
4 2 3.316260216 10.57128359 3.60359386
5 2 3.416959176 10.57150409 3.60359386
1 3 2.592788983 10.35443578 3.444256871
2 3 2.608598122 10.35472239 3.444256871
3 3 2.617768026 10.35111775 3.443618098
4 3 2.63094595 10.34844577 3.440738556
5 3 2.790741705 10.34620349 3.438493166
1 4 3.402766151 10.68434795 3.274121299
2 4 3.461727881 10.67929708 3.662022
3 4 3.43419686 10.67557992 3.661251287
4 4 3.483078399 10.67563074 3.660994251
5 4 3.630935143 10.67593563 3.663561646
1 5 3.028451126 10.28370323 3.208421367
2 5 2.949745925 10.2856158 3.20720802
3 5 2.949761631 10.29077511 3.20720802
4 5 2.99326423 10.31463316 3.20720802
5 5 3.10212176 10.32365735 3.20720802
1 6 2.329129648 10.05406041 3.048324724
2 6 2.344897177 10.04407524 3.047375507
3 6 2.34999335 10.01677159 3.04594999
4 6 2.416047698 9.991731919 3.043569603
5 6 2.578336275 9.985588141 3.042138646
1 7 1.642853346 9.333530983 2.32238772
2 7 1.735964831 9.353487881 2.341805806
3 7 1.538371464 9.403148419 2.351375257
4 7 1.638724833 9.411450971 2.361796953
5 7 1.807156983 9.414431574 2.371177884
1 8 3.08328059 7.798523054 0.500775288
2 8 3.10568473 7.80588204 0.500775288
3 8 3.119952325 7.783765536 0.500775288
4 8 3.136302585 7.790530592 0.500775288
5 8 3.238898036 7.791109511 0.500775288
1 9 3.921014461 10.40843594 3.395514599
2 9 3.921666358 10.40870749 3.391483689
3 9 3.922525659 10.3993782 3.368329778
4 9 3.923508791 10.3991041 3.380314171
5 9 3.959137481 10.39910715 3.629925311