Subject: weather statistics for APO, March 1994 - Dec 1995
From: Stupendous Man
Submitted: Wed, 13 Dec 1995 15:10:44 -0500
Message number: 30
(previous: 29,
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APO weather statistics
For the period Mar 21, 1994 - Dec 8, 1995, (with many gaps in the
time coverage) I find the following results:
- 446 total nights
- 385 (86%) the telescope enclosure was opened;
61 (14%) nights, the telescope was kept closed
- 103 (23%) nights were "photometric", meaning "clear all night"
337 (76%) nights had at least some clouds
6 ( 1%) I couldn't tell
- on nights when the enclosure was opened, the number of hours
spent observing was
< 1 1 - 3 3 - 5 5 - 7 7 - 9 9 - 11 > 11
-------------------------------------------------------------
nights 82 43 55 91 87 76 10
(21%) (11%) (20%) (24%) (24%) (20%) ( 3%)
- on nights when seeing was reported, the average of values listed
in the observing logs (from all instruments) was
< 1.25 1.25 - 1.75 1.75 - 2.25 2.25 - 2.75 > 2.75
---------------------------------------------------------------
nights 36 172 70 21 11
(12%) (55%) (23%) ( 7%) ( 4%)
I still haven't analyzed the long, long string of daily weather provided
by the Sunspot solar observers; if anyone would like to do so, please
let me know and I'll arrange access to the data.
Michael Richmond
APO APO APO APO APO Apache Point Observatory 3.5m APO APO APO
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