1981/01/01	0.22
1981/01/02	0.04
1981/01/03	0.04
1981/01/04	0.22
1981/01/05	0.13
1981/01/06	0.13
1981/01/07	0.13
1981/01/08	0.13
1981/01/09	0.04
1981/01/10	0.22
1981/01/11	0.13
1981/01/12	0.09
1981/01/13	0.13
1981/01/14	0.13
1981/01/15	0.13
1981/01/16	0.04
1981/01/17	0.09
1981/01/18	0.09
1981/01/19	0.09
1981/01/20	0.13
1981/01/21	0.09
1981/01/22	0.04
1981/01/23	0.18
1981/01/24	0.04
1981/01/25	0.04
1981/01/26	0.09
1981/01/27	0.13
1981/01/28	0.04
1981/01/29	0.04
1981/01/30	0.09
1981/01/31	0.04
1981/02/01	0.04
1981/02/02	0.13
1981/02/03	0
1981/02/04	0.13
1981/02/05	0
1981/02/06	0.09
1981/02/07	0
1981/02/08	0
1981/02/09	0.04
1981/02/10	0.04
1981/02/11	0
1981/02/12	0.09
1981/02/13	0
1981/02/14	0.04
1981/02/15	0
1981/02/16	0
1981/02/17	0
1981/02/18	0.09
1981/02/19	0.04
1981/02/20	0
1981/02/21	0
1981/02/22	0
1981/02/23	0
1981/02/24	0
1981/02/25	0
1981/02/26	0
1981/02/27	0.09
1981/02/28	0.13
1981/03/01	0.04
1981/03/02	0.04
1981/03/03	0.04
1981/03/04	0
1981/03/05	0
1981/03/06	0
1981/03/07	0
1981/03/08	0
1981/03/09	0
1981/03/10	0.04
1981/03/11	0.04
1981/03/12	0.04
1981/03/13	0.04
1981/03/14	0
1981/03/15	0
1981/03/16	0.04
1981/03/17	0
1981/03/18	0
1981/03/19	0
1981/03/20	0
1981/03/21	0
1981/03/22	0
1981/03/23	0
1981/03/24	0
1981/03/25	0
1981/03/26	0
1981/03/27	0
1981/03/28	0
1981/03/29	0
1981/03/30	0
1981/03/31	0
1981/04/01	0.66
1981/04/02	1.75
1981/04/03	0.66
1981/04/04	0.46
1981/04/05	0.42
1981/04/06	0.38
1981/04/07	0.24
1981/04/08	0.27
1981/04/09	0.27
1981/04/10	0.30
1981/04/11	0.21
1981/04/12	0.34
1981/04/13	0.46
1981/04/14	0.46
1981/04/15	0.62
1981/04/16	0.42
1981/04/17	0.42
1981/04/18	0.34
1981/04/19	0.34
1981/04/20	0.30
1981/04/21	0.42
1981/04/22	0.38
1981/04/23	0.62
1981/04/24	0.46
1981/04/25	0.27
1981/04/26	0.24
1981/04/27	0.27
1981/04/28	0.42
1981/04/29	0.34
1981/04/30	0.30
1981/05/01	0.30
1981/05/02	0.30
1981/05/03	1.24
1981/05/04	1.56
1981/05/05	0.94
1981/05/06	0.50
1981/05/07	0.42
1981/05/08	0.50
1981/05/09	0.38
1981/05/10	0.50
1981/05/11	0.38
1981/05/12	0.27
1981/05/13	1.00
1981/05/14	0.54
1981/05/15	0.54
1981/05/16	0.30
1981/05/17	0.88
1981/05/18	1.51
1981/05/19	2.40
1981/05/20	1.12
1981/05/21	0.70
1981/05/22	1.24
1981/05/23	0.76
1981/05/24	0.62
1981/05/25	0.70
1981/05/26	0.62
1981/05/27	0.42
1981/05/28	0.50
1981/05/29	0.46
1981/05/30	0.30
1981/05/31	0.38
1981/06/01	0.30
1981/06/02	0.18
1981/06/03	0.34
1981/06/04	1.00
1981/06/05	0.66
1981/06/06	0.50
1981/06/07	0.42
1981/06/08	0.42
1981/06/09	0.50
1981/06/10	0.42
1981/06/11	0.30
1981/06/12	0.27
1981/06/13	0.27
1981/06/14	0.24
1981/06/15	0.24
1981/06/16	0.27
1981/06/17	0.27
1981/06/18	0.21
1981/06/19	0.24
1981/06/20	0.34
1981/06/21	0.30
1981/06/22	0.30
1981/06/23	0.30
1981/06/24	0.30
1981/06/25	1.18
1981/06/26	2.41
1981/06/27	2.16
1981/06/28	2.21
1981/06/29	1.24
1981/06/30	0.76
1981/07/01	0.58
1981/07/02	0.46
1981/07/03	0.46
1981/07/04	0.30
1981/07/05	0.54
1981/07/06	14.01
1981/07/07	12.70
1981/07/08	3.40
1981/07/09	2.47
1981/07/10	0.85
1981/07/11	2.60
1981/07/12	1.95
1981/07/13	1.36
1981/07/14	1.06
1981/07/15	1.00
1981/07/16	1.12
1981/07/17	1.49
1981/07/18	1.12
1981/07/19	1.82
1981/07/20	23.21
1981/07/21	14.52
1981/07/22	14.86
1981/07/23	8.74
1981/07/24	5.40
1981/07/25	9.14
1981/07/26	6.06
1981/07/27	6.39
1981/07/28	2.66
1981/07/29	1.16
1981/07/30	0.91
1981/07/31	7.58
1981/08/01	10.26
1981/08/02	8.48
1981/08/03	6.62
1981/08/04	8.09
1981/08/05	36.25
1981/08/06	20.10
1981/08/07	18.33
1981/08/08	11.00
1981/08/09	7.46
1981/08/10	28.68
1981/08/11	30.56
1981/08/12	16.10
1981/08/13	11.30
1981/08/14	8.61
1981/08/15	6.62
1981/08/16	4.40
1981/08/17	2.41
1981/08/18	1.41
1981/08/19	0.41
1981/08/20	0.85
1981/08/21	0.85
1981/08/22	1.41
1981/08/23	0.85
1981/08/24	1.72
1981/08/25	2.60
1981/08/26	2.47
1981/08/27	2.27
1981/08/28	2.21
1981/08/29	2.16
1981/08/30	2.38
1981/08/31	2.01
1981/09/01	6.74
1981/09/02	11.90
1981/09/03	16.10
1981/09/04	7.96
1981/09/05	8.35
1981/09/06	6.39
1981/09/07	3.90
1981/09/08	2.66
1981/09/09	1.16
1981/09/10	5.62
1981/09/11	0.91
1981/09/12	0.85
1981/09/13	1.94
1981/09/14	2.41
1981/09/15	1.29
1981/09/16	1.94
1981/09/17	2.60
1981/09/18	2.47
1981/09/19	2.47
1981/09/20	2.16
1981/09/21	2.53
1981/09/22	2.21
1981/09/23	2.21
1981/09/24	2.08
1981/09/25	2.08
1981/09/26	1.82
1981/09/27	1.75
1981/09/28	1.69
1981/09/29	1.75
1981/09/30	2.16
1981/10/01	1.95
1981/10/02	1.75
1981/10/03	1.69
1981/10/04	1.56
1981/10/05	1.49
1981/10/06	1.69
1981/10/07	1.62
1981/10/08	7.10
1981/10/09	1.41
1981/10/10	3.65
1981/10/11	0.41
1981/10/12	1.07
1981/10/13	2.47
1981/10/14	2.27
1981/10/15	2.14
1981/10/16	6.28
1981/10/17	5.84
1981/10/18	2.16
1981/10/19	0.41
1981/10/20	1.72
1981/10/21	2.16
1981/10/22	2.47
1981/10/23	2.27
1981/10/24	2.27
1981/10/25	2.08
1981/10/26	1.95
1981/10/27	1.95
1981/10/28	1.88
1981/10/29	1.88
1981/10/30	1.82
1981/10/31	1.82
1981/11/01	1.75
1981/11/02	1.69
1981/11/03	1.82
1981/11/04	2.21
1981/11/05	2.47
1981/11/06	2.53
1981/11/07	2.38
1981/11/08	2.40
1981/11/09	1.95
1981/11/10	1.88
1981/11/11	1.75
1981/11/12	1.69
1981/11/13	1.69
1981/11/14	1.62
1981/11/15	1.75
1981/11/16	1.75
1981/11/17	1.69
1981/11/18	1.69
1981/11/19	1.56
1981/11/20	1.43
1981/11/21	1.36
1981/11/22	1.30
1981/11/23	1.30
1981/11/24	1.30
1981/11/25	1.24
1981/11/26	1.18
1981/11/27	1.30
1981/11/28	1.12
1981/11/29	1.12
1981/11/30	1.06
1981/12/01	1.00
1981/12/02	1.00
1981/12/03	0.94
1981/12/04	0.94
1981/12/05	0.94
1981/12/06	0.94
1981/12/07	0.88
1981/12/08	0.88
1981/12/09	0.82
1981/12/10	0.76
1981/12/11	0.76
1981/12/12	0.82
1981/12/13	0.76
1981/12/14	0.76
1981/12/15	0.70
1981/12/16	0.66
1981/12/17	0.66
1981/12/18	0.66
1981/12/19	0.62
1981/12/20	0.62
1981/12/21	0.62
1981/12/22	0.58
1981/12/23	0.58
1981/12/24	0.58
1981/12/25	0.54
1981/12/26	0.54
1981/12/27	0.54
1981/12/28	0.54
1981/12/29	0.50
1981/12/30	0.46
1981/12/31	1.00
#===========================================
# Number of observations = 365 / 365
# Average = 1.98