NATIONAL OPTICAL ASTRONOMY OBSERVATORIES
CERRO TOLOLO INTER-AMERICAN OBSERVATORY
Meteorology Report Month: May Year: 1997
Date Cloud cover Photometric Useful Useless
1 - 2 0 - 0 - 0 - 0 *    
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 - 2 *    
7 - 8 2 - 0 - 0 - 0 *    
8 - 9 0 - 0 - 0 - 0 *    
9 - 10 1 - 5 - 2 - 2   *  
10 - 11 8 - 6 - 4 - 5   *  
11 - 12 8 - 6 - 6 - 8     *
12 - 13 2 - 0 - 0 - 0 *    
13 - 14 0 - 0 - 0 - 0 *    
14 - 15 1 - 0 - 0 - 0 *    
15 - 16 6 - 7 - 8 - 8     *
16 - 17 4 - 4 - 7 - 3   *  
17 - 18 8 - 8 - 8 - 8     *
18 - 19 7 - 7 - 7 - 3     *
19 - 20 1 - 0 - 0 - 0 *    
20 - 21 7 - 8 - 6 - 2     *
21 - 22 0 - 0 - 2 - 3   *  
22 - 23 7 - 7 - 7 - 7     *
23 - 24 0 - 0 - 0 - 3 *    
24 - 25 8 - 8 - 8 - 8     *
25 - 26 8 - 8 - 8 - 8     *
26 - 27 5 - 5 - 8 - 8     *
27 - 28 5 - 5 - 8 - 8     *
28 - 29 8 - 8 - 8 - 8     *
29 - 30 8 - 8 - 8 - 8     *
30 - 31 4 - 3 - 5 - 5   *  
31 - 01 5 - 3 - 0 - 2   *  
Totals 13 6 12
Min. Med. Max.
Temperat. C degrees   3 12 26
Humidity % RH   <10 55 100
Wind speed M/H   -- 12 52
Rainfall this month: 4.5mm this year: 6mm
Report by: Oscar Saa