To give one quick example, using the first data line of your post... 173730 1805N 08313W 6964 02515 9251 +184 +158 039063 074 105 003 03 173730 -- 17:37:30 UTC, or 1:37:30p ET 1805N -- 18 degrees, 05 minutes N latitude 08313W -- 83 degrees, 13 minutes W longitude 6964 -- aircraft is at 694.4 mb 02515 -- 2515 meters is the height of the 694.4 mb surface/aircraft 9251 -- 925.1 mb is the extrapolated surface pressure +184 -- 18.4C is the temperature outside the aircraft at that level +158 -- 15.8C is the dewpoint outside the aircraft at that level 039063 -- the current winds outside the aircraft are from 039 degrees (NE) at 063 kt (these winds are 30 second average winds) 074 -- 74 kt maximum flight-level winds in the past 30 seconds 105 -- 105 kt maximum SFMR-derived surface winds in the past 30 seconds (these and the flight-level winds are 10 second average winds) 003 -- 3 mm/hr SFMR-derived rain rate, evaluated over a 10 second interval 03 -- quality control flag; the 0 suggests all positional variables are fine, the 3 suggests that the SFMR obs might be questionable
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