Panasonic 3.0 - Manual (Page 47)

EchoMap v3.0
47
7.4.5 Metar Ceiling/Visibility Example
MCN has a low IFR ceiling and VFR visibility, with the age of the
report less than 30 minutes.
ABY has an IFR ceiling and VFR visibility with moderate rain
reported, with the age of the report 30-60 minutes.
AMG has a low IFR ceiling and low IFR visibility and heavy snow
reported, with the age of the report 30-60 minutes.
VLD has a marginal VFR ceiling and VFR visibility with light rain
reported, with the age of the report 30-60 minutes.
TLH has a VFR ceiling and VFR visibility, with the age of the report
less than 30 minutes.