序号	1 To 19records	20 To 38records	39 To 57records	58 To 76records	77 To 95records	average
1	8.23	35.85	-1.31	6.41	37.32	17.30
2	69.51	-8.37	0.22	3.98	2.44	13.56
3	13.00	12.99	2.87	2.05	2.95	6.77
4	3.94	-6.09	61.24	0.33	5.11	12.91
5	2.49	19.79	2.59	1.49	1.47	5.57
6	13.55	5.23	20.06	-12.06	-4.35	4.49
7	1.92	8.94	15.50	1.61	5.34	6.66
8	-2.37	-0.56	5.63	-19.35	2.37	-2.86
9	11.77	-9.09	1.91	4.76	-1.02	1.67
10	47.89	-8.00	16.76	3.10	2.31	12.41
11	3.13	7.21	4.59	70.84	-0.14	17.13
12	5.20	44.53	-17.12	8.06	10.81	10.30
13	21.67	11.35	4.31	12.86	1.94	10.43
14	4.02	9.66	22.21	67.37	-2.86	20.08
15	28.05	38.70	4.91	20.37	16.60	21.73
16	-7.78	5.44	-17.64	-12.32	14.08	-3.64
17	16.05	13.04	59.00	-9.98	2.74	16.17
18	20.60	2.39	2.99	3.83	6.54	7.27
19	2.96	61.04	1.48	1.30	7.42	14.84