GM1
MET.TR.275(b)(3) World area forecast centre responsibilities
GRID POINT FORECASTS
(a) Layers centred at
a flight level referred to in MET.TR.275(b)(3)(vii)
have a depth of 100 hPa.
(b) Layers centred at a flight level referred to in MET.TR.275(b)(3)(viii) have a depth of 100 hPa for
flight levels below 240, then 50 hPa for flight levels 240 and above.
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