DAYS OBS.: The number of days on which observations were taken. Column will be blank if days are not
PRESSURE: Mean station pressure at station level and sea level in tenths of hPa. In the sea level pressure
column, Y or Z indicates the number is the mean height in gpm of the 850 hPa or 700 hPa pressure surface,
TEMPERATURE: Mean temperature and departure from AVERAGE value in degrees C. "S" indicates sea
DAYS 1 MM: The number of days on which precipitation was 1 mm or more.
PRECIPITATION: Total precipitation and departure from AVERAGE in mm. "T" indicates an amount less
than 0.5 mm.
QUINTILE: Frequency group of precipitation totals. Group numbers are 0 - 6. Groups 0 and 6 are for totals
less than and greater than any recorded in the 1961 - 1990 reference period.
% OF AV.: Sunshine total hours expressed as a percentage of long-term average. Currently, average period