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About 73% of stations report in BUFR, about 44% report native BUFR with roughly 35% reporting reformatted TEMP (see "structure" page and plots below). The proportion of native high-resolution reports has grown over the last few months (now up to 29%), principally due to the roll out of new software in the USA. A few BUFR reports are incomplete (eg data above 100 hPa missing). Reports from the ASAP ships are now only available in BUFR format. A smattering of other stations (green dots on the map, these include 17607, Cyprus; 33008; Belarus; 47115, Korea and two Mexican stations) are BUFR only, one or two of these are new to the GTS and never reported in TEMP code. Starting in September 2017 the ASAP (ship) reports have been changing identifiers (from 'AS*' to seven-character more-or-less random identifiers), this does not affect the numbers of reports.
(Grey: TAC reports but no BUFR, Purple: BUFR reports but no TAC, Red *: position error. Blue: both BUFR and TAC, light blue indicates fewer ascents in BUFR. Triangle - ship report, X - wind-only report.)
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