如下面一张表:
000001 | 2005/1/12 | -0.00911 | -0.00033 | -0.00877 |
000001 | 2005/1/13 | 0.006126 | 0.000152 | 0.005974 |
000001 | 2005/1/14 | -0.01065 | -0.00949 | -0.00117 |
000001 | 2005/1/17 | -0.03846 | -0.02318 | -0.01528 |
000001 | 2005/1/18 | -0.0048 | 0.008408 | -0.01321 |
000001 | 2005/1/19 | -0.00965 | -0.0061 | -0.00355 |
000001 | 2005/1/20 | -0.02435 | -0.01204 | -0.01232 |
000001 | 2005/1/21 | 0.066556 | 0.02398 | 0.042576 |
000001 | 2005/1/24 | 0.00936 | 0.017836 | -0.00848 |
000001 | 2005/1/25 | -0.02473 | -0.0012 | -0.02353 |
000001 | 2005/1/26 | -0.00159 | -0.00922 | 0.007639 |
000001 | 2005/1/27 | -0.0254 | -0.01412 | -0.01128 |
000001 | 2005/1/28 | 0.004886 | -0.01105 | 0.01594 |
000001 | 2005/1/31 | -0.01783 | -0.01971 | 0.001881 |
000001 | 2005/2/1 | 0.00495 | -0.00262 | 0.007565 |
000001 | 2005/2/2 | 0.050903 | 0.053124 | -0.00222 |
000001 | 2005/2/3 | -0.01406 | -0.01328 | -0.00078 |
000001 | 2005/2/4 | 0.045959 | 0.02059 | 0.025369 |
000001 | 2005/2/16 | -0.00152 | 0.008478 | -0.00999 |
000001 | 2005/2/17 | -0.00455 | -0.00135 | -0.0032 |
000001 | 2005/2/18 | 0.006098 | -0.01303 | 0.019131 |
000001 | 2005/2/21 | 0.016667 | 0.019756 | -0.00309 |
000001 | 2005/2/22 | 0.004471 | 0.021062 | -0.01659 |
000001 | 2005/2/23 | -0.01039 | 0.001892 | -0.01228 |
2005年2月16日是事件日,怎么编程求[-20,3]、[-20,2]、[-5,5]、[-2,2]、[-1,1]窗口期内的CAR,谢谢了!