|
Good visibility (meteorological optical range MOR > 2,000m defined according to WMO, Guide to Meteorological Instruments and Methods of Observation, Sixth Edition, ISBN: 92-63-16008-2, pp 1.9.1/1.9.11, Geneva 1996 ) and clean lens. |
a0c0 |
|
Good visibility (meteorological optical range MOR > 2,000m defined according to WMO, Guide to Meteorological Instruments and Methods of Observation, Sixth Edition, ISBN: 92-63-16008-2, pp 1.9.1/1.9.11, Geneva 1996 ) and clean lens. |
a0c0 |