NATIONAL OPTICAL ASTRONOMY OBSERVATORIES
	CERRO TOLOLO INTER-AMERICAN OBSERVATORY
Meteorology Report		Month: December		Year: 1979
Date	Cloud cover	Photometric	Useful	Useless
1 - 2	7-7-7-7			*
2 - 3	8-8-8-8			*
3 - 4	8-8-8-8			*
4 - 5	8-7-8-8			*
5 - 6	8-8-8-8			*
6 - 7	0-0-0-0	*
7 - 8	4-8-8-8			*
8 - 9	2-2-1-1	*	*
9 - 10	0-0-0-0	*
10 - 11	3-1-3-5	*	*
11 - 12	0-0-0-0	*
12 - 13	0-0-0-0	*
13 - 14	2-1-2-2	*	*
14 - 15	0-0-0-0	*
15 - 16	1-1-1-1	*
16 - 17	0-1-1-1	*
17 - 18	3-5-6-5			*
18 - 19	1-1-0-0	*
19 - 20	0-0-0-0	*
20 - 21	0-0-0-0	*
21 - 22	0-0-0-0	*
22 - 23	0-0-0-0	*
23 - 24	0-0-0-0	*
24 - 25	0-0-0-0	*
25 - 26	0-0-0-0	*
26 - 27	0-0-0-0	*
27 - 28	0-0-0-0	*
28 - 29	0-0-0-0	*
29 - 30	0-0-0-0	*
30 - 31	0-0-0-0	*
31 - 1	0-0-0-0	*
	Totals	24	3	7
		Min.	Med.	Max.
Temperat. deg.F		48	62	83
Humidity % RH		17		100
Wind speed M/H			32	54
Water, precipitation	this month	00	tot.year:	11.4mm
			Report by: Oscar Saa