NATIONAL OPTICAL ASTRONOMY OBSERVATORIES
CERRO TOLOLO INTER-AMERICAN OBSERVATORY
Meteorology Report		Month:	September	Year: 2001
Date	Cloud cover	Photometric	Useful	Useless
1 - 2	6-4-2-3		*
2 - 3	1-3-2-1		*
3 - 4	0-0-1-1		*
4 - 5	0-0-0-1	*
5 - 6	2-4-4-5		*
6 - 7	4-3-3-4		*
7 - 8	0-0-0-0	*
8 - 9	1-1-1-1		*
9 - 10	0-0-0-0	*
10 - 11	1-8-8-8			*
11 - 12	3-2-0-1		*
12 - 13	3-0-0-0	*
13 - 14	0-0-0-0	*
14 - 15	0-0-0-0	*
15 - 16	0-0-0-0	*
16 - 17	0-0-0-0	*
17 - 18	1-3-6-6		*
18 - 19	3-2-1-1		*
19 - 20	2-1-0-0		*
20 - 21	3-1-1-2		*
21 - 22	2-1-3-4
22 - 23	6-8-8-4			*
23 - 24	8-8-8-8			*
24 - 25	5-6-6-5			*
25 - 26	0-0-0-0	*
26 - 27	4-5-4-2		*
27 - 28	2-5-7-8		*
28 - 29	8-8-8-8			*
29 - 30	8-8-8-8			*
30 - 01	0-0-0-0	*
	Totals	10	14	6
		Min.	Med.	Max.
Temperat. deg.C		-3	8	15
Humidity % RH		10	28	100
Wind speed M/H		0	15	40
Water, precipitation	this month	19	tot.year:	137.5
			Report by:	Oscar Saa