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	3.50
1980/04/02	4.00
1980/04/03	5.00
1980/04/04	4.25
1980/04/05	3.75
1980/04/06	3.50
1980/04/07	3.75
1980/04/08	4.50
1980/04/09	4.00
1980/04/10	3.50
1980/04/11	3.25
1980/04/12	3.00
1980/04/13	2.90
1980/04/14	2.80
1980/04/15	2.90
1980/04/16	3.50
1980/04/17	4.75
1980/04/18	4.25
1980/04/19	4.00
1980/04/20	5.50
1980/04/21	11.90
1980/04/22	8.00
1980/04/23	8.00
1980/04/24	5.00
1980/04/25	4.00
1980/04/26	3.25
1980/04/27	4.00
1980/04/28	4.75
1980/04/29	4.75
1980/04/30	4.75
1980/05/01	3.00
1980/05/02	3.25
1980/05/03	3.00
1980/05/04	3.00
1980/05/05	4.50
1980/05/06	4.50
1980/05/07	4.00
1980/05/08	3.75
1980/05/09	3.75
1980/05/10	6.00
1980/05/11	5.25
1980/05/12	5.50
1980/05/13	7.50
1980/05/14	4.50
1980/05/15	4.00
1980/05/16	3.25
1980/05/17	3.75
1980/05/18	4.00
1980/05/19	3.00
1980/05/20	2.90
1980/05/21	3.75
1980/05/22	3.50
1980/05/23	4.00
1980/05/24	6.00
1980/05/25	4.75
1980/05/26	4.25
1980/05/27	4.75
1980/05/28	9.20
1980/05/29	6.25
1980/05/30	6.25
1980/05/31	9.50
1980/06/01	8.00
1980/06/02	7.25
1980/06/03	21.50
1980/06/04	19.90
1980/06/05	22.40
1980/06/06	16.45
1980/06/07	11.60
1980/06/08	8.00
1980/06/09	7.25
1980/06/10	7.50
1980/06/11	7.75
1980/06/12	13.40
1980/06/13	17.15
1980/06/14	16.10
1980/06/15	20.70
1980/06/16	24.65
1980/06/17	28.70
1980/06/18	29.15
1980/06/19	19.50
1980/06/20	16.10
1980/06/21	14.00
1980/06/22	13.70
1980/06/23	15.75
1980/06/24	21.50
1980/06/25	22.85
1980/06/26	49.75
1980/06/27	48.45
1980/06/28	34.50
1980/06/29	23.75
1980/06/30	18.30
1980/07/01	17.90
1980/07/02	16.10
1980/07/03	13.70
1980/07/04	12.20
1980/07/05	12.20
1980/07/06	11.60
1980/07/07	10.40
1980/07/08	9.80
1980/07/09	9.20
1980/07/10	8.90
1980/07/11	8.30
1980/07/12	8.30
1980/07/13	8.00
1980/07/14	8.90
1980/07/15	9.50
1980/07/16	10.70
1980/07/17	9.80
1980/07/18	10.40
1980/07/19	31.50
1980/07/20	145.60
1980/07/21	79.30
1980/07/22	68.10
1980/07/23	63.70
1980/07/24	177.50
1980/07/25	100.90
1980/07/26	286.00
1980/07/27	155.50
1980/07/28	119.00
1980/07/29	103.60
1980/07/30	68.90
1980/07/31	72.10
1980/08/01	65.80
1980/08/02	72.90
1980/08/03	63.00
1980/08/04	53.00
1980/08/05	44.10
1980/08/06	154.40
1980/08/07	76.90
1980/08/08	56.25
1980/08/09	51.05
1980/08/10	46.50
1980/08/11	40.50
1980/08/12	35.50
1980/08/13	32.50
1980/08/14	29.60
1980/08/15	29.60
1980/08/16	30.05
1980/08/17	30.50
1980/08/18	31.50
1980/08/19	45.90
1980/08/20	42.90
1980/08/21	41.70
1980/08/22	47.80
1980/08/23	45.90
1980/08/24	53.65
1980/08/25	126.00
1980/08/26	86.75
1980/08/27	66.50
1980/08/28	53.65
1980/08/29	45.30
1980/08/30	50.40
1980/08/31	51.70
1980/09/01	97.30
1980/09/02	138.00
1980/09/03	141.20
1980/09/04	254.70
1980/09/05	207.20
1980/09/06	124.00
1980/09/07	99.10
1980/09/08	89.30
1980/09/09	78.50
1980/09/10	93.70
1980/09/11	122.00
1980/09/12	101.80
1980/09/13	77.70
1980/09/14	71.30
1980/09/15	85.05
1980/09/16	51.70
1980/09/17	69.70
1980/09/18	60.90
1980/09/19	53.00
1980/09/20	46.50
1980/09/21	47.15
1980/09/22	49.75
1980/09/23	43.50
1980/09/24	46.50
1980/09/25	47.80
1980/09/26	50.40
1980/09/27	41.10
1980/09/28	40.00
1980/09/29	37.00
1980/09/30	36.50
1980/10/01	35.50
1980/10/02	33.00
1980/10/03	30.50
1980/10/04	29.60
1980/10/05	28.25
1980/10/06	26.45
1980/10/07	26.45
1980/10/08	27.35
1980/10/09	26.90
1980/10/10	27.80
1980/10/11	26.90
1980/10/12	30.05
1980/10/13	26.45
1980/10/14	26.00
1980/10/15	25.55
1980/10/16	32.50
1980/10/17	25.10
1980/10/18	23.30
1980/10/19	25.55
1980/10/20	29.15
1980/10/21	38.00
1980/10/22	37.00
1980/10/23	33.00
1980/10/24	25.10
1980/10/25	22.85
1980/10/26	21.95
1980/10/27	20.70
1980/10/28	19.90
1980/10/29	19.10
1980/10/30	18.70
1980/10/31	19.10
1980/11/01	18.30
1980/11/02	17.50
1980/11/03	16.80
1980/11/04	16.45
1980/11/05	16.45
1980/11/06	16.45
1980/11/07	16.10
1980/11/08	16.10
1980/11/09	16.45
1980/11/10	15.75
1980/11/11	15.40
1980/11/12	15.05
1980/11/13	15.05
1980/11/14	14.70
1980/11/15	14.35
1980/11/16	14.00
1980/11/17	14.00
1980/11/18	14.00
1980/11/19	14.00
1980/11/20	14.00
1980/11/21	14.00
1980/11/22	13.70
1980/11/23	13.70
1980/11/24	14.35
1980/11/25	14.35
1980/11/26	14.00
1980/11/27	13.40
1980/11/28	13.10
1980/11/29	13.10
1980/11/30	12.80
1980/12/01	12.50
1980/12/02	12.50
1980/12/03	12.20
1980/12/04	11.90
1980/12/05	11.90
1980/12/06	11.60
1980/12/07	11.60
1980/12/08	11.30
1980/12/09	11.30
1980/12/10	11.30
1980/12/11	11.00
1980/12/12	11.30
1980/12/13	20.30
1980/12/14	14.70
1980/12/15	12.20
1980/12/16	11.60
1980/12/17	11.30
1980/12/18	11.00
1980/12/19	11.00
1980/12/20	11.00
1980/12/21	10.70
1980/12/22	10.40
1980/12/23	10.40
1980/12/24	10.40
1980/12/25	10.10
1980/12/26	10.10
1980/12/27	10.10
1980/12/28	10.10
1980/12/29	9.80
1980/12/30	9.80
1980/12/31	9.80
#===========================================
# Number of observations = 275 / 366
# Average = 30.46