1981/01/01	0.64
1981/01/02	0.64
1981/01/03	0.64
1981/01/04	0.61
1981/01/05	0.66
1981/01/06	0.69
1981/01/07	0.66
1981/01/08	0.64
1981/01/09	0.64
1981/01/10	0.64
1981/01/11	0.64
1981/01/12	0.64
1981/01/13	0.66
1981/01/14	0.66
1981/01/15	0.66
1981/01/16	0.71
1981/01/17	0.77
1981/01/18	0.80
1981/01/19	0.83
1981/01/20	0.83
1981/01/21	0.83
1981/01/22	0.83
1981/01/23	0.83
1981/01/24	0.61
1981/01/25	0.03
1981/01/26	0.04
1981/01/27	0.04
1981/01/28	0.07
1981/01/29	0.08
1981/01/30	0.06
1981/01/31	0.09
1981/02/01	0.58
1981/02/02	0.58
1981/02/03	0.58
1981/02/04	0.66
1981/02/05	0.64
1981/02/06	0.56
1981/02/07	0.53
1981/02/08	0.56
1981/02/09	0.61
1981/02/10	0.66
1981/02/11	0.66
1981/02/12	0.66
1981/02/13	0.66
1981/02/14	0.46
1981/02/15	0.12
1981/02/16	0.77
1981/02/17	0.80
1981/02/18	0.69
1981/02/19	0.64
1981/02/20	0.64
1981/02/21	0.69
1981/02/22	0.64
1981/02/23	0.48
1981/02/24	0.48
1981/02/25	0.64
1981/02/26	0.61
1981/02/27	0.61
1981/02/28	0.61
1981/03/01	0.58
1981/03/02	0.58
1981/03/03	0.56
1981/03/04	0.64
1981/03/05	0.58
1981/03/06	0.61
1981/03/07	0.51
1981/03/08	0.51
1981/03/09	0.53
1981/03/10	0.41
1981/03/11	0.39
1981/03/12	0.53
1981/03/13	0.56
1981/03/14	0.53
1981/03/15	0.51
1981/03/16	0.61
1981/03/17	0.56
1981/03/18	0.39
1981/03/19	0.41
1981/03/20	0.48
1981/03/21	0.53
1981/03/22	0.56
1981/03/23	0.44
1981/03/24	0.44
1981/03/25	0.48
1981/03/26	0.39
1981/03/27	0.44
1981/03/28	0.44
1981/03/29	0.46
1981/03/30	0.48
1981/03/31	0.48
1981/04/01	0.54
1981/04/02	0.59
1981/04/03	0.59
1981/04/04	0.54
1981/04/05	0.48
1981/04/06	0.50
1981/04/07	0.46
1981/04/08	0.46
1981/04/09	0.54
1981/04/10	0.57
1981/04/11	0.48
1981/04/12	0.48
1981/04/13	0.46
1981/04/14	0.46
1981/04/15	0.50
1981/04/16	0.50
1981/04/17	0.48
1981/04/18	0.48
1981/04/19	0.48
1981/04/20	0.50
1981/04/21	0.52
1981/04/22	0.52
1981/04/23	0.54
1981/04/24	0.52
1981/04/25	0.52
1981/04/26	0.59
1981/04/27	0.68
1981/04/28	0.54
1981/04/29	0.50
1981/04/30	0.48
1981/05/01	0.48
1981/05/02	0.50
1981/05/03	0.64
1981/05/04	0.95
1981/05/05	1.09
1981/05/06	0.66
1981/05/07	0.61
1981/05/08	0.85
1981/05/09	0.90
1981/05/10	0.93
1981/05/11	1.06
1981/05/12	0.95
1981/05/13	0.93
1981/05/14	0.90
1981/05/15	0.88
1981/05/16	0.83
1981/05/17	0.90
1981/05/18	0.93
1981/05/19	1.15
1981/05/20	0.68
1981/05/21	0.59
1981/05/22	1.03
1981/05/23	0.68
1981/05/24	0.83
1981/05/25	0.30
1981/05/26	0.11
1981/05/27	0.10
1981/05/28	0.07
1981/05/29	0.07
1981/05/30	0.07
1981/05/31	0.07
1981/06/01	0.07
1981/06/02	0.07
1981/06/03	0.46
1981/06/04	1.18
1981/06/05	1.09
1981/06/06	1.00
1981/06/07	0.95
1981/06/08	1.24
1981/06/09	1.24
1981/06/10	1.18
1981/06/11	1.18
1981/06/12	1.09
1981/06/13	1.12
1981/06/14	0.85
1981/06/15	0.11
1981/06/16	0.73
1981/06/17	1.03
1981/06/18	0.68
1981/06/19	0.54
1981/06/20	0.50
1981/06/21	0.52
1981/06/22	0.57
1981/06/23	0.90
1981/06/24	0.83
1981/06/25	0.68
1981/06/26	0.16
1981/06/27	0.08
1981/06/28	0.08
1981/06/29	0.06
1981/06/30	0.06
1981/07/01	0.06
1981/07/02	0.06
1981/07/03	0.14
1981/07/04	0.75
1981/07/05	0.88
1981/07/06	1.69
1981/07/07	1.18
1981/07/08	0.52
1981/07/09	0.73
1981/07/10	0.98
1981/07/11	0.95
1981/07/12	1.00
1981/07/13	0.93
1981/07/14	1.21
1981/07/15	1.24
1981/07/16	0.88
1981/07/17	0.07
1981/07/18	0.22
1981/07/19	0.88
1981/07/20	0.80
1981/07/21	1.06
1981/07/22	1.00
1981/07/23	0.80
1981/07/24	0.85
1981/07/25	0.85
1981/07/26	0.90
1981/07/27	1.03
1981/07/28	1.21
1981/07/29	1.24
1981/07/30	1.18
1981/07/31	1.18
1981/08/01	1.18
1981/08/02	1.54
1981/08/03	1.45
1981/08/04	1.42
1981/08/05	1.48
1981/08/06	0.57
1981/08/07	0.61
1981/08/08	1.06
1981/08/09	1.21
1981/08/10	1.39
1981/08/11	0.93
1981/08/12	0.52
1981/08/13	1.30
1981/08/14	1.51
1981/08/15	1.51
1981/08/16	1.48
1981/08/17	1.45
1981/08/18	1.45
1981/08/19	1.45
1981/08/20	1.42
1981/08/21	1.39
1981/08/22	1.33
1981/08/23	1.30
1981/08/24	1.12
1981/08/25	1.33
1981/08/26	1.27
1981/08/27	1.24
1981/08/28	1.18
1981/08/29	1.15
1981/08/30	1.27
1981/08/31	1.27
1981/09/01	1.42
1981/09/02	1.51
1981/09/03	1.39
1981/09/04	1.39
1981/09/05	1.36
1981/09/06	1.45
1981/09/07	1.39
1981/09/08	1.42
1981/09/09	1.36
1981/09/10	0.46
1981/09/11	0.38
1981/09/12	0.78
1981/09/13	1.42
1981/09/14	1.45
1981/09/15	1.48
1981/09/16	1.24
1981/09/17	0.85
1981/09/18	1.51
1981/09/19	1.54
1981/09/20	1.48
1981/09/21	1.51
1981/09/22	1.54
1981/09/23	1.48
1981/09/24	1.60
1981/09/25	1.48
1981/09/26	1.45
1981/09/27	1.45
1981/09/28	1.42
1981/09/29	1.45
1981/09/30	1.48
1981/10/01	1.57
1981/10/02	1.60
1981/10/03	1.54
1981/10/04	1.60
1981/10/05	0.57
1981/10/06	1.51
1981/10/07	1.45
1981/10/08	1.48
1981/10/09	1.45
1981/10/10	1.39
1981/10/11	1.06
1981/10/12	1.30
1981/10/13	1.36
1981/10/14	1.51
1981/10/15	1.42
1981/10/16	1.24
1981/10/17	1.12
1981/10/18	1.51
1981/10/19	1.18
1981/10/20	1.03
1981/10/21	0.98
1981/10/22	1.00
1981/10/23	1.30
1981/10/24	1.36
1981/10/25	1.39
1981/10/26	1.69
1981/10/27	1.57
1981/10/28	1.51
1981/10/29	1.48
1981/10/30	1.45
1981/10/31	1.45
1981/11/01	1.39
1981/11/02	1.39
1981/11/03	1.48
1981/11/04	1.60
1981/11/05	1.57
1981/11/06	1.57
1981/11/07	1.54
1981/11/08	1.45
1981/11/09	1.24
1981/11/10	1.30
1981/11/11	1.27
1981/11/12	1.24
1981/11/13	0.46
1981/11/14	0.24
1981/11/15	0.22
1981/11/16	0.22
1981/11/17	0.22
1981/11/18	0.22
1981/11/19	0.22
1981/11/20	0.22
1981/11/21	0.18
1981/11/22	0.18
1981/11/23	0.12
1981/11/24	0.12
1981/11/25	0.12
1981/11/26	0.12
1981/11/27	0.12
1981/11/28	0.12
1981/11/29	0.12
1981/11/30	0.12
1981/12/01	-9999
1981/12/02	-9999
1981/12/03	-9999
1981/12/04	-9999
1981/12/05	-9999
1981/12/06	-9999
1981/12/07	-9999
1981/12/08	-9999
1981/12/09	-9999
1981/12/10	-9999
1981/12/11	-9999
1981/12/12	-9999
1981/12/13	-9999
1981/12/14	-9999
1981/12/15	-9999
1981/12/16	-9999
1981/12/17	-9999
1981/12/18	-9999
1981/12/19	-9999
1981/12/20	1.27
1981/12/21	1.30
1981/12/22	1.27
1981/12/23	1.21
1981/12/24	1.06
1981/12/25	1.03
1981/12/26	1.03
1981/12/27	1.00
1981/12/28	0.98
1981/12/29	0.95
1981/12/30	0.93
1981/12/31	0.90
#===========================================
# Number of observations = 346 / 365
# Average = 0.83