序号	1 To 16records	17 To 32records	33 To 48records	49 To 64records	65 To 80records	average
1	31.14	29.20	-1.83	3.56	17.61	15.94
2	26.74	0.13	11.08	19.79	81.10	27.77
3	0.08	-3.25	13.54	20.46	16.96	9.56
4	35.03	15.29	1.04	25.02	8.41	16.96
5	1.16	2.47	-20.50	2.50	31.99	3.52
6	11.98	10.98	8.06	23.14	11.40	13.11
7	10.20	13.55	3.39	81.36	-0.49	21.60
8	11.63	4.45	-14.07	-1.95	18.76	3.76
9	12.86	7.71	15.92	21.91	-0.66	11.55
10	-6.11	9.00	-13.12	2.91	-30.05	-7.47
11	-5.84	24.59	42.05	4.19	28.03	18.60
12	-37.36	2.82	4.62	10.42	13.84	-1.13
13	16.35	14.94	1.87	-10.86	4.78	5.42
14	-9.36	-8.65	97.96	7.39	13.77	20.22
15	20.51	5.73	-22.32	15.32	17.13	7.27
16	35.59	3.72	9.09	0.13	3.40	10.39