netcdf classic (CDF-1) {
dimensions:
	time = 144 ;
	nv = 2 ;
	n_station = 161 ;
	stat_long_len = 27 ;
	n_cloudlayer = 3 ;
// global attributes:
		:Title = "Ceilometer cloud base altitudes" ;
		:Institution = "University of Cologne Institute for Geophysics and Meteorology" ;
		:Contact_person = "Dr. Sonja Eikenberg (seiken@meteo.uni-koeln.de)" ;
		:Source = "Ceilometer" ;
		:History = "Ceilometer data received from DWD and adapted with create_hdcp_cmnet_v01.sh by University of Cologne." ;
		:Conventions = "based on CF-1.6" ;
		:Processing_date = "2015-01-13 13:22:55" ;
		:Author = "Dr. Sonja Eikenberg (seiken@meteo.uni-koeln.de)" ;
		:Comments = "_FillValue=-999 indicates that the respective instrument was measuring but that no zcb was retrieved. The reason could be either clear-sky or an undetected upper cloud layer because the lowest cloud layer was too optically thick to be penetrated. missing_value=-888 indicates that the respective instrumentwas not measuring." ;
		:Licence = "For non-commercial use only. This data is subject to the HD(CP)2 data policy to be found at hdcp2.zmaw.de and in the HD(CP)2 Observation Data Product Standard." ;
variables:
	double time(time) ;
		time:long_name = "time" ;
		time:standard_name = "time" ;
		time:units = "seconds since 1970-01-01 00:00:00 UTC" ;
	double time_bnds(time, nv) ;
		time_bnds:long_name = "time_boundaries" ;
		time_bnds:units = "seconds since 1970-01-01 00:00:00 UTC" ;
	int stat_id(n_station) ;
		stat_id:long_name = "station_id" ;
		stat_id:_FillValue = -999 ;
	char stat_long(n_station, stat_long_len) ;
		stat_long:long_name = "station_long_name" ;
	float lat(n_station) ;
		lat:long_name = "latitude" ;
		lat:standard_name = "latitude" ;
		lat:units = "degrees_north" ;
		lat:valid_range = -90.0, 90.0 ;
		lat:_FillValue = -999.0 ;
	float lon(n_station) ;
		lon:long_name = "longitude" ;
		lon:standard_name = "longitude" ;
		lon:units = "degrees_east" ;
		lon:valid_range = -180.0, 180.0 ;
		lon:_FillValue = -999.0 ;
	int zsl(n_station) ;
		zsl:long_name = "altitude_above_mean_sea_level" ;
		zsl:standard_name = "altitude" ;
		zsl:units = "m" ;
		zsl:valid_range = -500, 9000 ;
		zsl:_FillValue = -999 ;
	int zcb(time, n_station, n_cloudlayer) ;
		zcb:long_name = "cloud_base_altitude_above_mean_sea_level" ;
		zcb:standard_name = "cloud_base_altitude" ;
		zcb:units = "m" ;
		zcb:valid_min = 0 ;
		zcb:valid_max = 50000 ;
		zcb:_FillValue = -999 ;
		zcb:missing_value = -888 ;
		zcb:scale_factor = 1 ;
		zcb:add_offset = 0 ;
// time: first 1284854700.0, last 6.013470016999068e-154, count 144
}