08/01/1981	0.00	11.2
08/01/1981	1.00	12.5
08/01/1981	2.00	14.3
08/01/1981	3.00	15.2
08/01/1981	4.00	15.9
08/01/1981	5.00	16.7
08/01/1981	6.00	17.5
08/01/1981	7.00	17.7
08/01/1981	8.00	17.4
08/01/1981	9.00	15.4
08/01/1981	10.00	14
08/01/1981	11.00	12.7
08/01/1981	12.00	12.1
08/01/1981	13.00	13.5
08/01/1981	14.00	15.3
08/01/1981	15.00	16
08/01/1981	16.00	16.3
08/01/1981	17.00	16.1
08/01/1981	18.00	16.1
08/01/1981	19.00	16.1
08/01/1981	20.00	15.9
08/01/1981	21.00	15.6
08/01/1981	22.00	15.4
08/01/1981	23.00	15.3
09/01/1981	0.00	15.4
09/01/1981	1.00	14.8
09/01/1981	2.00	14.5
09/01/1981	3.00	14.6
09/01/1981	4.00	14.1
09/01/1981	5.00	13.6
09/01/1981	6.00	13.6
09/01/1981	7.00	13.4
09/01/1981	8.00	12.8
09/01/1981	9.00	12.3
09/01/1981	10.00	11.8
09/01/1981	11.00	11.7
09/01/1981	12.00	11.2
09/01/1981	13.00	10.5
09/01/1981	14.00	10.1
09/01/1981	15.00	9.8
09/01/1981	16.00	9.5
09/01/1981	17.00	9.5
09/01/1981	18.00	9.5
09/01/1981	19.00	9.7