文本内日期时间数据统计

dkslel

文本样例在最下方，以逗号分隔的情况下，第一列是日期，第二列是精确到秒的时间， 想将第二列统计到分，并且提取第三列在此分钟数出现时的  第一条数据、最后一条数据、分钟内的最大数、分钟内的最小数 第四列第五列只提取 第一条和最后一条 即可 我现在是用循环一条一条数据扯出来对比的，总感觉可以有更好的方法，各位有没有什么好的思路 日期，时间，第三列，第四列，第五列    20240926,15:02:35,7970,369753,280630 20240927,21:12:40,7989,368918,33322 20240927,21:12:41,7990,368918,33323 20240927,21:12:41,7990,368918,33323 20240927,21:12:42,7990,368918,33323 20240927,21:12:42,7990,368918,33331 20240927,21:12:43,7990,368918,33331 20240927,21:12:44,7990,368918,33332 20240927,21:12:45,7989,368917,33333 20240927,21:12:47,7990,368918,33334 20240927,21:12:48,7990,368918,33334 20240927,21:12:48,7990,368918,33338 20240927,21:12:49,7990,368918,33339 20240927,21:12:50,7990,368918,33339 20240927,21:12:51,7989,368917,33340 20240927,21:12:51,7990,368931,33354 20240927,21:12:52,7989,368902,33391 20240927,21:12:53,7989,368903,33392 20240927,21:12:53,7989,368902,33393 20240927,21:12:54,7990,368902,33394 20240927,21:12:54,7990,368902,33394 20240927,21:12:55,7989,368902,33395 20240927,21:12:55,7989,368901,33398 20240927,21:12:57,7990,368902,33399 20240927,21:12:57,7990,368902,33400 20240927,21:12:58,7990,368902,33400 20240927,21:12:58,7989,368908,33415 20240927,21:12:59,7989,368908,33430 20240927,21:12:59,7989,368908,33430 20240927,21:13:00,7988,368944,33485 20240927,21:13:00,7987,368925,33533 20240927,21:13:01,7988,368922,33536 20240927,21:13:01,7988,368898,33573 20240927,21:13:02,7988,368899,33581 20240927,21:13:02,7987,368905,33639 20240927,21:13:03,7987,368923,33702 20240927,21:13:03,7987,368951,33744 20240927,21:13:04,7987,368949,33748 20240927,21:13:04,7987,368950,33757 20240927,21:13:05,7987,368944,33771