序号	1 To 21records	22 To 42records	43 To 63records	64 To 84records	85 To 105records	average
1	27.80	-17.16	-17.45	12.02	-3.04	0.43
2	10.58	8.02	-7.27	-1.29	-2.65	1.48
3	7.72	16.80	17.60	43.54	-27.38	11.66
4	6.02	39.67	0.17	3.74	58.33	21.59
5	-5.19	8.00	171.76	15.17	18.05	41.56
6	1.37	19.81	4.10	32.84	-9.25	9.78
7	17.86	-5.99	23.13	6.39	18.58	11.99
8	1.39	-9.28	16.87	45.68	10.98	13.13
9	6.10	-7.44	-4.14	1.43	-2.44	-1.30
10	23.30	0.45	-25.55	8.50	-4.61	0.42
11	2.42	29.08	-25.11	10.03	-2.07	2.87
12	8.69	5.31	112.82	7.94	5.79	28.11
13	-4.09	-9.48	-10.04	44.91	19.37	8.13
14	-1.58	10.98	0.62	20.31	20.41	10.15
15	-0.48	12.46	15.35	-0.55	0.19	5.39
16	-8.02	-1.34	-4.70	5.96	19.59	2.30
17	4.92	12.84	-2.34	6.60	9.21	6.24
18	2.46	0.99	-13.92	0.63	40.83	6.20
19	-9.89	10.89	-19.52	16.38	5.09	0.59
20	12.23	-6.89	-14.07	9.74	-2.01	-0.20
21	8.99	9.93	41.48	-35.70	-1.80	4.58