These files contain monthly observational data that have been quality-controlled using semi-automated computer programs as well as oversight by our staff. The filenames are prefixed with a label...

These files contain instantaneous observations at ten-minute intervals, with either six or eight columns. The data have been taken directly from the originally transmitted hexadecimal data with...

The Reader three-hourly observation data are composed of the nearest valid instantaneous observation within 40 minutes of the synoptic reporting times (i.e., 00, 03, 06, 09, 12, 15, 18, and 21)....

These files contain instantaneous observations at ten-minute intervals, with either six or eight columns. The data have been taken directly from the originally transmitted hexadecimal data with...

The Reader three-hourly observation data are composed of the nearest valid instantaneous observation within 40 minutes of the synoptic reporting times (i.e., 00, 03, 06, 09, 12, 15, 18, and 21)....

These files contain instantaneous observations at ten-minute intervals, with either six or eight columns. The data have been taken directly from the originally transmitted hexadecimal data with...

These files contain instantaneous observations at ten-minute intervals, with either six or eight columns. The data have been taken directly from the originally transmitted hexadecimal data with...

The Reader three-hourly observation data are composed of the nearest valid instantaneous observation within 40 minutes of the synoptic reporting times (i.e., 00, 03, 06, 09, 12, 15, 18, and 21)....

These files contain instantaneous observations at ten-minute intervals, with either six or eight columns. The data have been taken directly from the originally transmitted hexadecimal data with...

These files contain instantaneous observations at ten-minute intervals, with either six or eight columns. The data have been taken directly from the originally transmitted hexadecimal data with...

The Reader three-hourly observation data are composed of the nearest valid instantaneous observation within 40 minutes of the synoptic reporting times (i.e., 00, 03, 06, 09, 12, 15, 18, and 21)....

The Reader three-hourly observation data are composed of the nearest valid instantaneous observation within 40 minutes of the synoptic reporting times (i.e., 00, 03, 06, 09, 12, 15, 18, and 21)....

These files contain instantaneous observations at ten-minute intervals, with either six or eight columns. The data have been taken directly from the originally transmitted hexadecimal data with...

The Reader three-hourly observation data are composed of the nearest valid instantaneous observation within 40 minutes of the synoptic reporting times (i.e., 00, 03, 06, 09, 12, 15, 18, and 21)....

These files contain instantaneous observations at ten-minute intervals, with either six or eight columns. The data have been taken directly from the originally transmitted hexadecimal data with...

These files contain instantaneous observations at ten-minute intervals, with either six or eight columns. The data have been taken directly from the originally transmitted hexadecimal data with...

The Reader three-hourly observation data are composed of the nearest valid instantaneous observation within 40 minutes of the synoptic reporting times (i.e., 00, 03, 06, 09, 12, 15, 18, and 21)....

The Reader three-hourly observation data are composed of the nearest valid instantaneous observation within 40 minutes of the synoptic reporting times (i.e., 00, 03, 06, 09, 12, 15, 18, and 21)....

These files contain instantaneous observations at ten-minute intervals, with either six or eight columns. The data have been taken directly from the originally transmitted hexadecimal data with...

These files contain instantaneous observations at ten-minute intervals, with either six or eight columns. The data have been taken directly from the originally transmitted hexadecimal data with...