有这样的一个数据表 fivemindata
chanel_code fivemin_time fivemin_max fivemin_ave
1 2007-1-10 00:05:00 3.68 2.24
1 2007-1-10 00:10:00 3.67 2.25
1 2007-1-10 00:15:00 3.59 2.37
1 2007-1-10 00:20:00 3.64 2.46
1 2007-1-10 00:25:00 3.42 2.13
1 2007-1-10 00:30:00 3.27 2.34
1 2007-1-10 00:35:00 3.29 2.28
1 2007-1-10 00:40:00 3.16 2.27
1 2007-1-10 00:45:00 3.33 2.28
1 2007-1-10 00:50:00 3.34 2.25
1 2007-1-10 00:55:00 3.26 2.73
1 2007-1-10 01:00:00 3.49 2.27
1 2007-1-10 01:05:00 3.57 2.57
1 2007-1-10 01:10:00 3.24 2.56
1 2007-1-10 01:15:00 3.68 2.25
1 2007-1-10 01:20:00 3.58 2.32
1 2007-1-10 01:25:00 3.42 2.17
1 2007-1-10 01:30:00 3.24 2.28
1 2007-1-10 01:35:00 3.16 2.28
1 2007-1-10 01:40:00 3.35 2.25
1 2007-1-10 01:45:00 3.26 2.74