NATIONAL OPTICAL ASTRONOMY OBSERVATORIES
	CERRO TOLOLO INTER-AMERICAN OBSERVATORY
Meteorology Report		Month: December		Year: 1990
Date	Cloud cover	Photometric	Useful	Useless
1 - 2	0 - 0 - 0 - 0	*
2 - 3	0 - 0 - 0 - 0	*
3 - 4	0 - 0 - 1 - 3		*
4 - 5	0 - 0 - 0 - 0	*
5 - 6	4 - 6 - 2 - 1			*
6 - 7	0 - 0 - 0 - 0	*
7 - 8	0 - 0 - 0 - 0	*
8 - 9	0 - 0 - 0 - 0	*
9 - 10	0 - 1 - 1 - 0	*	*
10 - 11	1 - 1 - 1 - 1		*
11 - 12	1 - 1 - 2 - 6		*
12 - 13	0 - 0 - 0 - 0	*
13 - 14	0 - 0 - 0 - 0	*
14 - 15	2 - 2 - 1 - 0		*
15 - 16	1 - 3 - 5 - 5			*
16 - 17	2 - 3 - 2 - 3		*
17 - 18	2 - 2 - 2 - 1		*
18 - 19	0 - 0 - 0 - 0	*
19 - 20	0 - 0 - 0 - 0	*
20 - 21	2 - 5 - 5 - 5			*
21 - 22	0 - 0 - 0 - 0	*
22 - 23	0 - 0 - 0 - 0	*
23 - 24	0 - 0 - 0 - 0	*
24 - 25	2 - 2 - 1 - 1		*
25 - 26	3 - 2 - 1 - 1		*
26 - 27	2 - 1 - 0 - 0		*
27 - 28	1 - 0 - 0 - 0	*
28 - 29	1 - 2 - 2 - 1		*
29 - 30	1 - 0 - 0 - 0	*
30 - 31	1 - 3 - 4 - 3			*
31 - 01	Observatory	closed
	Totals	15	11	4
		Min.	Med.	Max.
Temperat. F degrees		36	66	84
Humidity % RH		14	35	83
Wind speed M/H		--	7	22
Rainfall this month:	0.0	this year:	49.2mm
			Report by: Oscar Saa