1981/01/01	2.42
1981/01/02	2.42
1981/01/03	2.42
1981/01/04	2.42
1981/01/05	2.42
1981/01/06	2.24
1981/01/07	2.06
1981/01/08	2.06
1981/01/09	2.06
1981/01/10	2.06
1981/01/11	2.06
1981/01/12	2.06
1981/01/13	2.06
1981/01/14	2.06
1981/01/15	2.06
1981/01/16	1.70
1981/01/17	1.88
1981/01/18	2.06
1981/01/19	1.88
1981/01/20	1.88
1981/01/21	1.70
1981/01/22	1.52
1981/01/23	1.52
1981/01/24	1.52
1981/01/25	1.52
1981/01/26	1.52
1981/01/27	1.52
1981/01/28	1.52
1981/01/29	1.52
1981/01/30	1.52
1981/01/31	1.52
1981/02/01	1.34
1981/02/02	1.52
1981/02/03	1.34
1981/02/04	1.34
1981/02/05	1.34
1981/02/06	1.16
1981/02/07	1.16
1981/02/08	1.16
1981/02/09	2.42
1981/02/10	1.34
1981/02/11	1.16
1981/02/12	0.98
1981/02/13	0.98
1981/02/14	0.98
1981/02/15	0.98
1981/02/16	0.80
1981/02/17	0.32
1981/02/18	0.80
1981/02/19	0.80
1981/02/20	0.64
1981/02/21	0.48
1981/02/22	0.48
1981/02/23	0.48
1981/02/24	0.48
1981/02/25	0.64
1981/02/26	0.64
1981/02/27	0.64
1981/02/28	0.64
1981/03/01	0.64
1981/03/02	0.64
1981/03/03	0.64
1981/03/04	0.48
1981/03/05	0.48
1981/03/06	0.48
1981/03/07	0.48
1981/03/08	0.48
1981/03/09	0.48
1981/03/10	0.64
1981/03/11	0.48
1981/03/12	0.16
1981/03/13	0.64
1981/03/14	0.48
1981/03/15	0.48
1981/03/16	0.48
1981/03/17	0.32
1981/03/18	0.16
1981/03/19	0.32
1981/03/20	1.70
1981/03/21	1.88
1981/03/22	1.70
1981/03/23	1.70
1981/03/24	0.98
1981/03/25	1.70
1981/03/26	1.70
1981/03/27	1.70
1981/03/28	1.70
1981/03/29	1.52
1981/03/30	1.52
1981/03/31	1.52
1981/04/01	1.90
1981/04/02	1.76
1981/04/03	1.20
1981/04/04	1.48
1981/04/05	1.20
1981/04/06	1.10
1981/04/07	1.01
1981/04/08	1.01
1981/04/09	0.92
1981/04/10	0.92
1981/04/11	0.82
1981/04/12	0.73
1981/04/13	1.01
1981/04/14	1.01
1981/04/15	1.76
1981/04/16	2.18
1981/04/17	2.46
1981/04/18	2.46
1981/04/19	1.90
1981/04/20	1.48
1981/04/21	1.62
1981/04/22	1.34
1981/04/23	1.34
1981/04/24	1.20
1981/04/25	1.10
1981/04/26	1.48
1981/04/27	3.32
1981/04/28	2.04
1981/04/29	1.20
1981/04/30	1.10
1981/05/01	1.01
1981/05/02	1.10
1981/05/03	1.34
1981/05/04	1.62
1981/05/05	5.32
1981/05/06	4.86
1981/05/07	2.46
1981/05/08	2.46
1981/05/09	2.18
1981/05/10	1.90
1981/05/11	1.76
1981/05/12	1.62
1981/05/13	1.20
1981/05/14	1.10
1981/05/15	1.62
1981/05/16	1.34
1981/05/17	1.76
1981/05/18	2.04
1981/05/19	2.96
1981/05/20	8.20
1981/05/21	4.40
1981/05/22	8.20
1981/05/23	13.60
1981/05/24	31.17
1981/05/25	16.90
1981/05/26	20.79
1981/05/27	8.70
1981/05/28	7.45
1981/05/29	5.78
1981/05/30	4.40
1981/05/31	4.40
1981/06/01	4.04
1981/06/02	5.78
1981/06/03	4.22
1981/06/04	5.78
1981/06/05	4.63
1981/06/06	3.50
1981/06/07	3.32
1981/06/08	2.78
1981/06/09	2.60
1981/06/10	3.14
1981/06/11	2.78
1981/06/12	2.60
1981/06/13	2.18
1981/06/14	2.18
1981/06/15	2.78
1981/06/16	2.46
1981/06/17	2.32
1981/06/18	2.18
1981/06/19	2.78
1981/06/20	2.78
1981/06/21	2.46
1981/06/22	2.04
1981/06/23	2.18
1981/06/24	2.60
1981/06/25	2.46
1981/06/26	2.46
1981/06/27	3.32
1981/06/28	2.96
1981/06/29	2.60
1981/06/30	2.32
1981/07/01	2.18
1981/07/02	2.18
1981/07/03	1.90
1981/07/04	1.90
1981/07/05	1.90
1981/07/06	54.15
1981/07/07	76.42
1981/07/08	24.37
1981/07/09	13.87
1981/07/10	18.04
1981/07/11	21.86
1981/07/12	13.56
1981/07/13	9.42
1981/07/14	8.35
1981/07/15	7.85
1981/07/16	9.70
1981/07/17	9.99
1981/07/18	8.35
1981/07/19	9.99
1981/07/20	34.70
1981/07/21	49.13
1981/07/22	20.32
1981/07/23	12.01
1981/07/24	24.37
1981/07/25	60.00
1981/07/26	19.17
1981/07/27	15.16
1981/07/28	21.10
1981/07/29	18.04
1981/07/30	15.52
1981/07/31	19.17
1981/08/01	16.96
1981/08/02	24.80
1981/08/03	18.04
1981/08/04	21.48
1981/08/05	46.67
1981/08/06	36.20
1981/08/07	30.26
1981/08/08	26.08
1981/08/09	16.96
1981/08/10	15.52
1981/08/11	23.10
1981/08/12	20.32
1981/08/13	15.52
1981/08/14	13.87
1981/08/15	11.70
1981/08/16	11.42
1981/08/17	9.99
1981/08/18	12.63
1981/08/19	21.86
1981/08/20	20.32
1981/08/21	19.55
1981/08/22	12.32
1981/08/23	13.56
1981/08/24	16.24
1981/08/25	10.56
1981/08/26	8.85
1981/08/27	8.35
1981/08/28	8.35
1981/08/29	7.85
1981/08/30	8.10
1981/08/31	9.99
1981/09/01	9.99
1981/09/02	10.85
1981/09/03	8.35
1981/09/04	11.13
1981/09/05	9.42
1981/09/06	12.32
1981/09/07	16.60
1981/09/08	48.50
1981/09/09	18.40
1981/09/10	13.25
1981/09/11	11.70
1981/09/12	12.01
1981/09/13	9.99
1981/09/14	8.85
1981/09/15	7.35
1981/09/16	7.10
1981/09/17	7.10
1981/09/18	6.60
1981/09/19	6.35
1981/09/20	14.80
1981/09/21	16.24
1981/09/22	11.13
1981/09/23	7.85
1981/09/24	7.10
1981/09/25	18.04
1981/09/26	12.01
1981/09/27	8.60
1981/09/28	7.60
1981/09/29	6.60
1981/09/30	7.10
1981/10/01	7.35
1981/10/02	10.28
1981/10/03	8.35
1981/10/04	9.14
1981/10/05	12.01
1981/10/06	8.35
1981/10/07	9.14
1981/10/08	10.56
1981/10/09	16.96
1981/10/10	11.70
1981/10/11	9.42
1981/10/12	8.35
1981/10/13	8.35
1981/10/14	9.14
1981/10/15	8.35
1981/10/16	7.85
1981/10/17	20.32
1981/10/18	21.86
1981/10/19	14.49
1981/10/20	12.63
1981/10/21	10.85
1981/10/22	10.56
1981/10/23	10.85
1981/10/24	9.99
1981/10/25	10.28
1981/10/26	20.71
1981/10/27	12.94
1981/10/28	10.28
1981/10/29	8.85
1981/10/30	8.35
1981/10/31	9.14
1981/11/01	8.10
1981/11/02	8.10
1981/11/03	7.85
1981/11/04	7.60
1981/11/05	7.35
1981/11/06	6.85
1981/11/07	6.60
1981/11/08	6.60
1981/11/09	7.10
1981/11/10	7.10
1981/11/11	7.10
1981/11/12	6.85
1981/11/13	6.60
1981/11/14	7.10
1981/11/15	7.35
1981/11/16	9.42
1981/11/17	19.94
1981/11/18	12.94
1981/11/19	10.85
1981/11/20	9.14
1981/11/21	8.60
1981/11/22	7.60
1981/11/23	7.60
1981/11/24	7.35
1981/11/25	6.35
1981/11/26	6.60
1981/11/27	6.60
1981/11/28	6.60
1981/11/29	6.60
1981/11/30	6.35
1981/12/01	6.14
1981/12/02	6.14
1981/12/03	6.14
1981/12/04	5.93
1981/12/05	5.51
1981/12/06	5.51
1981/12/07	5.51
1981/12/08	5.09
1981/12/09	5.09
1981/12/10	4.88
1981/12/11	4.88
1981/12/12	5.09
1981/12/13	5.30
1981/12/14	4.88
1981/12/15	7.10
1981/12/16	5.93
1981/12/17	5.30
1981/12/18	5.30
1981/12/19	5.09
1981/12/20	4.88
1981/12/21	4.88
1981/12/22	4.88
1981/12/23	4.67
1981/12/24	4.46
1981/12/25	4.46
1981/12/26	4.46
1981/12/27	4.25
1981/12/28	4.25
1981/12/29	4.25
1981/12/30	4.25
1981/12/31	4.25
#===========================================
# Number of observations = 365 / 365
# Average = 7.30