1980/01/01	-9999
1980/01/02	-9999
1980/01/03	-9999
1980/01/04	-9999
1980/01/05	-9999
1980/01/06	-9999
1980/01/07	-9999
1980/01/08	-9999
1980/01/09	-9999
1980/01/10	-9999
1980/01/11	-9999
1980/01/12	-9999
1980/01/13	-9999
1980/01/14	-9999
1980/01/15	-9999
1980/01/16	-9999
1980/01/17	-9999
1980/01/18	-9999
1980/01/19	-9999
1980/01/20	-9999
1980/01/21	-9999
1980/01/22	-9999
1980/01/23	-9999
1980/01/24	-9999
1980/01/25	-9999
1980/01/26	-9999
1980/01/27	-9999
1980/01/28	-9999
1980/01/29	-9999
1980/01/30	-9999
1980/01/31	-9999
1980/02/01	-9999
1980/02/02	-9999
1980/02/03	-9999
1980/02/04	-9999
1980/02/05	-9999
1980/02/06	-9999
1980/02/07	-9999
1980/02/08	-9999
1980/02/09	-9999
1980/02/10	-9999
1980/02/11	-9999
1980/02/12	-9999
1980/02/13	-9999
1980/02/14	-9999
1980/02/15	-9999
1980/02/16	-9999
1980/02/17	-9999
1980/02/18	-9999
1980/02/19	-9999
1980/02/20	-9999
1980/02/21	-9999
1980/02/22	-9999
1980/02/23	-9999
1980/02/24	-9999
1980/02/25	-9999
1980/02/26	-9999
1980/02/27	-9999
1980/02/28	-9999
1980/02/29	-9999
1980/03/01	-9999
1980/03/02	-9999
1980/03/03	-9999
1980/03/04	-9999
1980/03/05	-9999
1980/03/06	-9999
1980/03/07	-9999
1980/03/08	-9999
1980/03/09	-9999
1980/03/10	-9999
1980/03/11	-9999
1980/03/12	-9999
1980/03/13	-9999
1980/03/14	-9999
1980/03/15	-9999
1980/03/16	-9999
1980/03/17	-9999
1980/03/18	-9999
1980/03/19	-9999
1980/03/20	-9999
1980/03/21	-9999
1980/03/22	-9999
1980/03/23	-9999
1980/03/24	-9999
1980/03/25	-9999
1980/03/26	-9999
1980/03/27	-9999
1980/03/28	-9999
1980/03/29	-9999
1980/03/30	-9999
1980/03/31	-9999
1980/04/01	0.18
1980/04/02	0.18
1980/04/03	0.18
1980/04/04	0.21
1980/04/05	0.46
1980/04/06	0.43
1980/04/07	0.36
1980/04/08	0.50
1980/04/09	0.60
1980/04/10	0.46
1980/04/11	0.43
1980/04/12	0.40
1980/04/13	0.36
1980/04/14	0.36
1980/04/15	0.33
1980/04/16	0.33
1980/04/17	0.50
1980/04/18	0.60
1980/04/19	0.92
1980/04/20	0.84
1980/04/21	0.72
1980/04/22	0.57
1980/04/23	0.43
1980/04/24	0.40
1980/04/25	0.40
1980/04/26	0.40
1980/04/27	0.36
1980/04/28	0.29
1980/04/29	0.23
1980/04/30	0.23
1980/05/01	0.21
1980/05/02	0.18
1980/05/03	0.18
1980/05/04	0.21
1980/05/05	0.21
1980/05/06	0.21
1980/05/07	0.33
1980/05/08	0.29
1980/05/09	0.26
1980/05/10	0.26
1980/05/11	0.23
1980/05/12	0.21
1980/05/13	0.18
1980/05/14	0.16
1980/05/15	0.10
1980/05/16	0.05
1980/05/17	0.03
1980/05/18	0.08
1980/05/19	0.18
1980/05/20	0.23
1980/05/21	0.26
1980/05/22	0.18
1980/05/23	0.21
1980/05/24	0.50
1980/05/25	0.88
1980/05/26	1.00
1980/05/27	6.60
1980/05/28	3.20
1980/05/29	3.35
1980/05/30	2.60
1980/05/31	1.80
1980/06/01	1.40
1980/06/02	1.10
1980/06/03	4.70
1980/06/04	3.50
1980/06/05	2.60
1980/06/06	2.75
1980/06/07	1.90
1980/06/08	1.70
1980/06/09	1.00
1980/06/10	0.92
1980/06/11	0.80
1980/06/12	0.80
1980/06/13	2.60
1980/06/14	1.60
1980/06/15	2.30
1980/06/16	2.60
1980/06/17	2.45
1980/06/18	1.90
1980/06/19	1.90
1980/06/20	4.70
1980/06/21	4.10
1980/06/22	8.00
1980/06/23	9.20
1980/06/24	5.40
1980/06/25	4.40
1980/06/26	4.55
1980/06/27	4.40
1980/06/28	4.10
1980/06/29	3.35
1980/06/30	3.35
1980/07/01	2.90
1980/07/02	2.30
1980/07/03	1.70
1980/07/04	1.40
1980/07/05	1.30
1980/07/06	1.20
1980/07/07	1.00
1980/07/08	0.92
1980/07/09	0.88
1980/07/10	0.84
1980/07/11	0.84
1980/07/12	0.80
1980/07/13	0.80
1980/07/14	0.76
1980/07/15	0.76
1980/07/16	0.76
1980/07/17	0.72
1980/07/18	0.76
1980/07/19	0.76
1980/07/20	0.76
1980/07/21	2.75
1980/07/22	2.45
1980/07/23	2.00
1980/07/24	2.75
1980/07/25	19.10
1980/07/26	19.45
1980/07/27	22.60
1980/07/28	18.40
1980/07/29	14.60
1980/07/30	10.20
1980/07/31	8.00
1980/08/01	7.60
1980/08/02	6.80
1980/08/03	6.00
1980/08/04	5.00
1980/08/05	4.25
1980/08/06	3.95
1980/08/07	4.25
1980/08/08	3.95
1980/08/09	3.35
1980/08/10	3.05
1980/08/11	2.75
1980/08/12	2.30
1980/08/13	2.30
1980/08/14	2.00
1980/08/15	1.80
1980/08/16	1.60
1980/08/17	1.60
1980/08/18	2.30
1980/08/19	4.25
1980/08/20	36.10
1980/08/21	34.30
1980/08/22	18.40
1980/08/23	17.35
1980/08/24	20.50
1980/08/25	33.40
1980/08/26	31.60
1980/08/27	18.75
1980/08/28	11.90
1980/08/29	9.40
1980/08/30	8.20
1980/08/31	44.20
1980/09/01	226.95
1980/09/02	107.70
1980/09/03	60.15
1980/09/04	45.30
1980/09/05	47.50
1980/09/06	66.70
1980/09/07	55.30
1980/09/08	112.20
1980/09/09	70.20
1980/09/10	44.20
1980/09/11	38.00
1980/09/12	32.05
1980/09/13	25.20
1980/09/14	21.90
1980/09/15	36.10
1980/09/16	34.30
1980/09/17	27.60
1980/09/18	28.90
1980/09/19	25.20
1980/09/20	20.85
1980/09/21	19.10
1980/09/22	17.35
1980/09/23	21.90
1980/09/24	19.45
1980/09/25	19.10
1980/09/26	16.40
1980/09/27	15.20
1980/09/28	15.80
1980/09/29	18.40
1980/09/30	16.70
1980/10/01	15.80
1980/10/02	16.10
1980/10/03	14.00
1980/10/04	13.10
1980/10/05	11.30
1980/10/06	10.20
1980/10/07	9.40
1980/10/08	9.60
1980/10/09	11.60
1980/10/10	10.60
1980/10/11	9.80
1980/10/12	9.20
1980/10/13	9.60
1980/10/14	9.40
1980/10/15	8.60
1980/10/16	8.60
1980/10/17	9.20
1980/10/18	10.00
1980/10/19	9.00
1980/10/20	10.80
1980/10/21	11.60
1980/10/22	10.00
1980/10/23	9.00
1980/10/24	8.00
1980/10/25	7.40
1980/10/26	6.80
1980/10/27	6.20
1980/10/28	5.80
1980/10/29	5.40
1980/10/30	5.00
1980/10/31	5.00
1980/11/01	5.20
1980/11/02	5.00
1980/11/03	5.00
1980/11/04	4.70
1980/11/05	4.70
1980/11/06	4.25
1980/11/07	4.25
1980/11/08	4.70
1980/11/09	10.40
1980/11/10	10.80
1980/11/11	9.40
1980/11/12	7.60
1980/11/13	6.60
1980/11/14	6.00
1980/11/15	5.60
1980/11/16	5.20
1980/11/17	5.00
1980/11/18	4.70
1980/11/19	4.40
1980/11/20	4.40
1980/11/21	4.10
1980/11/22	3.95
1980/11/23	3.80
1980/11/24	3.80
1980/11/25	3.80
1980/11/26	4.25
1980/11/27	4.55
1980/11/28	4.10
1980/11/29	3.65
1980/11/30	3.35
1980/12/01	3.05
1980/12/02	3.05
1980/12/03	2.60
1980/12/04	2.30
1980/12/05	2.15
1980/12/06	2.00
1980/12/07	1.90
1980/12/08	1.90
1980/12/09	1.60
1980/12/10	1.60
1980/12/11	1.50
1980/12/12	1.60
1980/12/13	3.50
1980/12/14	6.60
1980/12/15	5.40
1980/12/16	4.25
1980/12/17	3.50
1980/12/18	3.05
1980/12/19	2.45
1980/12/20	2.00
1980/12/21	1.70
1980/12/22	1.70
1980/12/23	1.50
1980/12/24	1.40
1980/12/25	1.30
1980/12/26	1.20
1980/12/27	1.10
1980/12/28	1.10
1980/12/29	1.00
1980/12/30	1.00
1980/12/31	0.96
#===========================================
# Number of observations = 275 / 366
# Average = 8.94