Annual weather statistics for APO 3.5-m: 1994
 
total number of nights is 157
 
here comes comes open/close 
  29 c
 128 o
 
here comes observing hours when enclosure was opened
-2.000000 0
0.000000 11 
2.000000 16 
4.000000 21 
6.000000 29 
8.000000 23 
10.000000 20 
12.000000 6 
14.000000 2 
16.000000 0
 
here comes photometric/not 
   4 d
 126 n
  27 y
 
here comes seeing 
0.000000 0
0.500000 0 
1.000000 6 
1.500000 37 
2.000000 13 
2.500000 8 
3.000000 5 
3.500000 1 
4.000000 0
 
fraction of nights the telescope opened, per month
 Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep  Oct  Nov  Dec
0.00 0.00 0.25 0.93 0.85 0.90 0.83 0.00 0.00 1.00 0.73 0.77

 
       Annual weather statistics for APO 3.5-m: 1995
 
total number of nights is 311
 
here comes comes open/close 
  39 c
 272 o
 
here comes observing hours when enclosure was opened
-2.000000 0
0.000000 11 
2.000000 28 
4.000000 35 
6.000000 63 
8.000000 66 
10.000000 61 
12.000000 8 
14.000000 0
 
here comes photometric/not 
   2 d
 231 n
  78 y
 
here comes seeing 
0.000000 0
0.500000 0 
1.000000 35 
1.500000 142 
2.000000 59 
2.500000 13 
3.000000 3 
3.500000 1 
4.000000 1 
4.500000 0
 
fraction of nights the telescope opened, per month
 Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep  Oct  Nov  Dec
0.71 0.82 0.97 1.00 1.00 0.89 0.90 0.74 0.90 1.00 1.00 0.70

 
       Annual weather statistics for APO 3.5-m: 1996
 
total number of nights is 330
 
here comes comes open/close 
  61 c
   1 n
 268 o
 
here comes observing hours when enclosure was opened
-2.000000 0
0.000000 20 
2.000000 27 
4.000000 27 
6.000000 65 
8.000000 49 
10.000000 73 
12.000000 7 
14.000000 0
 
here comes photometric/not 
 283 n
  47 y
 
here comes seeing 
0.000000 0
0.500000 0 
1.000000 75 
1.500000 143 
2.000000 26 
2.500000 6 
3.000000 0 
3.500000 2 
4.000000 0 
4.500000 0 
5.000000 0 
5.500000 1 
6.000000 0
 
fraction of nights the telescope opened, per month
 Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep  Oct  Nov  Dec
0.87 0.82 0.75 0.86 1.00 0.70 0.84 0.71 0.84 0.75 0.84 1.00

 
       Annual weather statistics for APO 3.5-m: 1997
 
total number of nights is 151
 
here comes comes open/close 
  48 c
 103 o
 
here comes observing hours when enclosure was opened
-2.000000 0
0.000000 11 
2.000000 16 
4.000000 18 
6.000000 24 
8.000000 17 
10.000000 15 
12.000000 2 
14.000000 0
 
here comes photometric/not 
   3 d
 128 n
  20 y
 
here comes seeing 
0.000000 0
0.500000 0 
1.000000 33 
1.500000 49 
2.000000 8 
2.500000 2 
3.000000 0
 
fraction of nights the telescope opened, per month
 Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep  Oct  Nov  Dec
0.73 0.50 0.88 0.64 0.69 0.67 0.00 0.00 0.00 0.00 0.00 0.00