時制データベースがあり、次の時系列のデータを使用して、時系列データの平均関数を介して時制集計を実行したいと思います。
Hourly average of HH= (HH-1):51, HH:01, HH:11, HH:21, HH:31, HH:41.
また、上記の値は瞬時値です。
サンプルデータ:
ambtemp ddate_ttime
1 -1.42 2007-09-28 23:39:09
2 -1.24 2007-09-28 23:41:09
3 -1.28 2007-09-28 23:43:09
4 -1.28 2007-09-28 23:45:09
5 -1.24 2007-09-28 23:47:09
6 -1.42 2007-09-28 23:49:09
7 -1.68 2007-09-28 23:51:09
8 -1.76 2007-09-28 23:53:09
9 -1.96 2007-09-28 23:55:09
10 -2.02 2007-09-28 23:57:09
11 -1.92 2007-09-28 23:59:09
12 -1.64 2007-09-29 00:01:09
13 -1.76 2007-09-29 00:03:09
14 -1.83 2007-09-29 00:05:09
15 -1.86 2007-09-29 00:07:09
16 -1.94 2007-09-29 00:09:09
17 -1.87 2007-09-29 00:11:09
18 -1.87 2007-09-29 00:13:09
19 -1.80 2007-09-29 00:15:09
20 -1.64 2007-09-29 00:17:09
21 -1.60 2007-09-29 00:19:09
22 -1.90 2007-09-29 00:21:09
23 -2.08 2007-09-29 00:23:09
24 -1.94 2007-09-29 00:25:09
25 -2.12 2007-09-29 00:27:09
26 -1.87 2007-09-29 00:29:09
27 -2.18 2007-09-29 00:31:09
28 -1.98 2007-09-29 00:33:09
29 -1.73 2007-09-29 00:35:09
30 -1.84 2007-09-29 00:37:09
31 -2.04 2007-09-29 00:39:09
32 -1.86 2007-09-29 00:41:09
33 -1.94 2007-09-29 00:43:09
34 -1.77 2007-09-29 00:45:09
そして期待される結果:
Hourly mean for 0:00 = average of values of (23:51, 0:01, 0:11, 0:21, 0:31, 0:41)
時間平均0:00=(-1.68 + -1.64 + -1.87 + -1.90 + -2.18 + -1.86)/ 6