|Outside temperature, relative humidity, and
barometric pressure may be plotted as far back as the beginning of the
previous calendar year.
Data are collected at five-minute intervals and downloaded once/hour.
Until 8pm, March 12, 2003, data were those recorded by weather sensors
located on the "old Harlan house," about
two hundred feet northwest of the Shane 3-meter dome.
Since then, weather sensors on top of the 3-meter, providing readings
more representative of conditions at that telescope, have been used.
Please choose the type of data and the number of days over
which you wish them plotted. Program will only retrieve data back to
the beginning of the previous calendar year, even if a larger number of
days is entered.
N.B.: Long periods can be slow to process.
N.B.: Sea level pressure is ~29.9", corrected pressure for Mt. H. is ~25.6".