序号	1 To 15records	16 To 30records	31 To 45records	46 To 60records	61 To 75records	average
1	-7.79	41.02	-7.64	0.16	29.50	11.05
2	1.96	-12.46	0.31	-7.27	3.40	-2.81
3	-15.71	8.90	-2.32	30.92	19.79	8.32
4	6.03	5.90	5.52	-13.29	26.76	6.18
5	58.21	2.80	9.73	-39.47	-7.01	4.85
6	8.43	-29.25	-7.32	0.96	5.27	-4.38
7	23.33	-8.20	3.58	-13.29	-34.45	-5.80
8	-1.83	14.23	-4.51	30.41	-8.55	5.95
9	-28.20	-4.28	25.44	10.42	13.72	3.42
10	22.66	-7.87	32.21	63.83	-10.17	20.13
11	-16.23	-18.83	-7.29	24.36	32.90	2.98
12	15.80	-10.00	-6.86	1.46	11.06	2.29
13	28.50	26.44	-10.49	0.70	15.86	12.20
14	-12.00	3.35	-8.33	0.00	-16.48	-6.69
15	6.12	1.17	-8.33	9.62	-9.05	-0.10