NATIONAL OPTICAL ASTRONOMY OBSERVATORIES
	CERRO TOLOLO INTER-AMERICAN OBSERVATORY
Meteorology Report		Month: December		Year: 1997
Date	Cloud cover	Photometric	Useful	Useless
1 - 2	0 - 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 - 0	*
7 - 8	1 - 1 - 1 - 1		*
8 - 9	2 - 5 - 6 - 8		*
9 - 10	2 - 4 - 6 - 6		*
10 - 11	8 - 8 - 8 - 8			*
11 - 12	8 - 8 - 8 - 8			*
12 - 13	0 - 0 - 0 - 0	*
13 - 14	0 - 0 - 1 - 1		*
14 - 15	0 - 1 - 1 - 1		*
15 - 16	0 - 0 - 0 - 0	*
16 - 17	0 - 0 - 0 - 0	*
17 - 18	0 - 0 - 0 - 0	*
18 - 19	0 - 0 - 0 - 0	*
19 - 20	0 - 0 - 0 - 0	*
20 - 21	8 - 8 - 8 - 8			*
21 - 22	8 - 7 - 7 - 7			*
22 - 23	0 - 0 - 0 - 0	*
23 - 24	0 - 0 - 0 - 0	*
24 - 25	Observatory	closed
25 - 26	Observatory	closed
26 - 27	1 - 0 - 0 - 1		*
27 - 28	0 - 0 - 0 - 0	*
28 - 29	1 - 0 - 0 - 0	*
29 - 30	0 - 1 - 0 - 1		*
30 - 31	4 - 3 - 4 - 6		*
31 - 01	0 - 0 - 0 - 0	*
	Totals	16	9	4
		Min.	Med.	Max.
Temperat. C degrees		4,4	~16	24,2
Humidity % RH		13	~40	100
Wind speed M/H		--	9	38
Rainfall this month:	0,0	this year:	341,5
			Report by: Oscar Saa