1981/01/01	3.05
1981/01/02	3.05
1981/01/03	3.05
1981/01/04	3.05
1981/01/05	3.05
1981/01/06	3.05
1981/01/07	3.05
1981/01/08	3.05
1981/01/09	3.05
1981/01/10	3.05
1981/01/11	3.05
1981/01/12	3.05
1981/01/13	3.05
1981/01/14	3.05
1981/01/15	3.05
1981/01/16	3.05
1981/01/17	3.05
1981/01/18	2.78
1981/01/19	2.52
1981/01/20	2.52
1981/01/21	2.52
1981/01/22	2.52
1981/01/23	2.52
1981/01/24	2.52
1981/01/25	2.52
1981/01/26	2.52
1981/01/27	2.52
1981/01/28	2.52
1981/01/29	2.52
1981/01/30	2.52
1981/01/31	2.52
1981/02/01	2.52
1981/02/02	2.52
1981/02/03	2.52
1981/02/04	2.52
1981/02/05	2.52
1981/02/06	2.52
1981/02/07	2.52
1981/02/08	2.52
1981/02/09	2.52
1981/02/10	2.52
1981/02/11	2.52
1981/02/12	2.52
1981/02/13	2.52
1981/02/14	2.52
1981/02/15	2.52
1981/02/16	2.52
1981/02/17	2.52
1981/02/18	2.52
1981/02/19	2.26
1981/02/20	2.26
1981/02/21	2.26
1981/02/22	2.26
1981/02/23	2.26
1981/02/24	2.26
1981/02/25	2.26
1981/02/26	2.26
1981/02/27	2.26
1981/02/28	2.26
1981/03/01	2.26
1981/03/02	1.99
1981/03/03	1.99
1981/03/04	1.99
1981/03/05	1.99
1981/03/06	1.99
1981/03/07	1.99
1981/03/08	1.99
1981/03/09	1.99
1981/03/10	1.99
1981/03/11	1.99
1981/03/12	1.99
1981/03/13	1.99
1981/03/14	1.99
1981/03/15	1.99
1981/03/16	1.99
1981/03/17	1.99
1981/03/18	1.99
1981/03/19	1.99
1981/03/20	1.99
1981/03/21	1.99
1981/03/22	1.99
1981/03/23	1.99
1981/03/24	1.99
1981/03/25	1.99
1981/03/26	1.99
1981/03/27	3.05
1981/03/28	3.05
1981/03/29	3.05
1981/03/30	3.05
1981/03/31	3.05
1981/04/01	1.54
1981/04/02	1.54
1981/04/03	1.41
1981/04/04	1.41
1981/04/05	1.28
1981/04/06	1.15
1981/04/07	1.15
1981/04/08	1.15
1981/04/09	1.02
1981/04/10	1.41
1981/04/11	1.54
1981/04/12	1.28
1981/04/13	1.41
1981/04/14	1.67
1981/04/15	1.54
1981/04/16	1.15
1981/04/17	1.41
1981/04/18	1.67
1981/04/19	1.41
1981/04/20	1.28
1981/04/21	1.28
1981/04/22	1.15
1981/04/23	1.15
1981/04/24	1.02
1981/04/25	1.02
1981/04/26	1.28
1981/04/27	1.80
1981/04/28	1.15
1981/04/29	1.02
1981/04/30	1.15
1981/05/01	1.15
1981/05/02	1.02
1981/05/03	1.02
1981/05/04	1.15
1981/05/05	1.41
1981/05/06	1.54
1981/05/07	1.15
1981/05/08	1.41
1981/05/09	3.78
1981/05/10	2.24
1981/05/11	1.54
1981/05/12	1.15
1981/05/13	1.02
1981/05/14	1.15
1981/05/15	1.28
1981/05/16	1.02
1981/05/17	1.15
1981/05/18	1.54
1981/05/19	1.15
1981/05/20	1.28
1981/05/21	1.54
1981/05/22	1.54
1981/05/23	2.24
1981/05/24	3.78
1981/05/25	1.54
1981/05/26	4.00
1981/05/27	2.68
1981/05/28	2.24
1981/05/29	6.17
1981/05/30	3.78
1981/05/31	2.24
1981/06/01	1.54
1981/06/02	1.54
1981/06/03	1.67
1981/06/04	1.54
1981/06/05	1.54
1981/06/06	1.41
1981/06/07	1.41
1981/06/08	1.54
1981/06/09	1.54
1981/06/10	1.41
1981/06/11	1.41
1981/06/12	1.41
1981/06/13	1.28
1981/06/14	1.54
1981/06/15	1.54
1981/06/16	1.54
1981/06/17	1.54
1981/06/18	2.68
1981/06/19	2.90
1981/06/20	11.76
1981/06/21	4.62
1981/06/22	3.78
1981/06/23	7.51
1981/06/24	16.30
1981/06/25	20.02
1981/06/26	11.25
1981/06/27	6.79
1981/06/28	5.86
1981/06/29	4.31
1981/06/30	4.00
1981/07/01	1.67
1981/07/02	1.54
1981/07/03	1.28
1981/07/04	0
1981/07/05	-9999
1981/07/06	-9999
1981/07/07	-9999
1981/07/08	-9999
1981/07/09	-9999
1981/07/10	-9999
1981/07/11	61.93
1981/07/12	46.35
1981/07/13	30.96
1981/07/14	25.28
1981/07/15	21.24
1981/07/16	17.20
1981/07/17	24.27
1981/07/18	40.87
1981/07/19	27.30
1981/07/20	23.26
1981/07/21	20.23
1981/07/22	16.34
1981/07/23	16.34
1981/07/24	50.46
1981/07/25	26.29
1981/07/26	22.25
1981/07/27	22.25
1981/07/28	23.26
1981/07/29	30.96
1981/07/30	40.87
1981/07/31	39.50
1981/08/01	29.74
1981/08/02	26.29
1981/08/03	23.26
1981/08/04	64.84
1981/08/05	188.45
1981/08/06	74.17
1981/08/07	59.02
1981/08/08	30.96
1981/08/09	35.84
1981/08/10	33.40
1981/08/11	57.56
1981/08/12	39.50
1981/08/13	29.74
1981/08/14	27.30
1981/08/15	27.30
1981/08/16	50.46
1981/08/17	33.40
1981/08/18	30.96
1981/08/19	27.30
1981/08/20	57.56
1981/08/21	34.62
1981/08/22	28.52
1981/08/23	25.28
1981/08/24	23.26
1981/08/25	23.26
1981/08/26	44.98
1981/08/27	43.61
1981/08/28	25.28
1981/08/29	21.24
1981/08/30	17.20
1981/08/31	24.27
1981/09/01	23.26
1981/09/02	34.62
1981/09/03	64.84
1981/09/04	46.35
1981/09/05	51.83
1981/09/06	114.44
1981/09/07	70.96
1981/09/08	44.98
1981/09/09	34.62
1981/09/10	33.40
1981/09/11	28.52
1981/09/12	23.26
1981/09/13	21.24
1981/09/14	20.23
1981/09/15	20.23
1981/09/16	20.23
1981/09/17	19.22
1981/09/18	14.62
1981/09/19	11.18
1981/09/20	11.18
1981/09/21	11.18
1981/09/22	8.60
1981/09/23	7.28
1981/09/24	7.28
1981/09/25	7.28
1981/09/26	7.28
1981/09/27	7.28
1981/09/28	6.62
1981/09/29	5.30
1981/09/30	5.30
1981/10/01	5.30
1981/10/02	5.30
1981/10/03	11.18
1981/10/04	90.36
1981/10/05	70.96
1981/10/06	27.30
1981/10/07	22.25
1981/10/08	20.23
1981/10/09	15.48
1981/10/10	12.90
1981/10/11	12.04
1981/10/12	11.18
1981/10/13	11.18
1981/10/14	8.60
1981/10/15	7.94
1981/10/16	7.94
1981/10/17	7.94
1981/10/18	7.94
1981/10/19	7.94
1981/10/20	7.94
1981/10/21	7.94
1981/10/22	7.94
1981/10/23	7.94
1981/10/24	7.94
1981/10/25	8.60
1981/10/26	9.46
1981/10/27	8.60
1981/10/28	7.94
1981/10/29	7.94
1981/10/30	7.28
1981/10/31	5.30
1981/11/01	5.30
1981/11/02	5.30
1981/11/03	4.64
1981/11/04	4.64
1981/11/05	4.64
1981/11/06	4.64
1981/11/07	4.64
1981/11/08	4.64
1981/11/09	4.64
1981/11/10	3.98
1981/11/11	3.98
1981/11/12	3.98
1981/11/13	3.98
1981/11/14	3.98
1981/11/15	3.98
1981/11/16	3.98
1981/11/17	3.98
1981/11/18	4.64
1981/11/19	3.98
1981/11/20	3.98
1981/11/21	3.98
1981/11/22	3.98
1981/11/23	3.98
1981/11/24	3.98
1981/11/25	3.98
1981/11/26	3.98
1981/11/27	3.98
1981/11/28	3.98
1981/11/29	3.32
1981/11/30	3.32
1981/12/01	3.32
1981/12/02	3.32
1981/12/03	3.32
1981/12/04	3.32
1981/12/05	2.66
1981/12/06	2.00
1981/12/07	2.00
1981/12/08	2.00
1981/12/09	2.00
1981/12/10	2.00
1981/12/11	2.00
1981/12/12	2.00
1981/12/13	2.00
1981/12/14	1.80
1981/12/15	1.60
1981/12/16	1.60
1981/12/17	1.60
1981/12/18	1.60
1981/12/19	1.60
1981/12/20	1.60
1981/12/21	1.60
1981/12/22	1.60
1981/12/23	1.60
1981/12/24	1.60
1981/12/25	1.60
1981/12/26	1.60
1981/12/27	1.60
1981/12/28	1.60
1981/12/29	1.60
1981/12/30	1.60
1981/12/31	1.60
#===========================================
# Number of observations = 359 / 365
# Average = 10.50