NATIONAL OPTICAL ASTRONOMY OBSERVATORIES
	CERRO TOLOLO INTER-AMERICAN OBSERVATORY
Meteorology Report		Month: September		Year: 1981
Date	Cloud cover	Photometric	Useful	Useless
1 - 2	1-2-3-1		*
2 - 3	0-0-0-0	*	*
3 - 4	0-0-0-0	*	*
4 - 5	0-0-0-0	*	*
5 - 6	0-0-0-0	*	*
6 - 7	0-0-0-1	*	*
7 - 8	0-0-0-0	*	*
8 - 9	0-0-2-2		*
9 - 10	0-1-4-5		*
10 - 11	5-5-6-6		*	*
11 - 12	0-0-3-6		*
12 - 13	8-8-8-8			*
13 - 14	1-0-0-0	*	*
14 - 15	0-2-1-0		*
15 - 16	0-0-0-0	*	*
16 - 17	3-4-5-7			*
17 - 18	3-3-5-5		*	*
18 - 19	1-2-3-3		*	*
19 - 20	4-3-3-3		*	*
20 - 21	2-3-5-6		*	*
21 - 22	3-5-6-6			*
22 - 23	0-0-0-0	*	*
23 - 24	1-0-0-0	*	*
24 - 25	1-1-1-1		*
25 - 26	0-0-0-0	*	*
26 - 27	1-2-4-3		*
27 - 28	1-5-5-3		*
28 - 29	2-3-1-0		*
29 - 30	1-0-0-0	*	*
30 - 01	2-0-0-0	*	*
	Totals	13	27	8
		Min.	Med.	Max.
Temperat. deg.F		24	54	75
Humidity % RH		<5	20	100
Wind speed M/H		0	<10	65
Water, precipitation	this month	18mm	tot.year:	114mm
			Report by: Oscar Saa