HDF5 file, superblock version 0
group /
	attribute Conventions = "CF-1.8"
	attribute author = "christian.herrera@noaa.gov"
	attribute comments = (text block)
| The data has not undergone any processing
|                                          other than what the Vaisala software has ap_plied.
|                                          In addition, no QC has been ap_plied other than
|                                          a visual inspection for impossible values or
|                                          obvious errors.
	attribute i_nput_files = "202203_CEILOMETER_1_LEVEL_3_DEFAULT_29.his", "L1_DRA_202203290000_p1950282.nc"
	attribute institution = "NOAA/GML/GRAD"
	attribute serial_number = "p1950282"
	attribute source = "Vaisala CL51 ceilometer"
	attribute title = "Ceilometer cloud product"
	attribute version = "1.0"
dataset /backscatter_profile: float32, shape (2400, 1540)
	attribute _FillValue = nan
	attribute comments = "Range-corrected-scattering"
	attribute long_name = "2-D ceilometer signal backscatter profile."
	attribute units = "10e-9 m^-1 sr^-1"
dataset /cloud_base: float32, shape (2400, 3)
	attribute _FillValue = nan
	attribute cloud_base_1 = "First cloud base height or vertical visibility\n                                                if cloud_status=4"
	attribute cloud_base_2 = "Second cloud base height or highest received\n                                                signal if cloud_status=4"
	attribute cloud_base_3 = "Third cloud base height"
	attribute comments = "A 2D array containing all three cloud bases\n                                            at each timestep. -999 if no significant signal."
	attribute long_name = "Cloud base heights."
	attribute units = "m"
dataset /cloud_layer: int64, shape (3)
	attribute long_name = "cloud layer"
	attribute units = "1"
// cloud_layer: first 1, last 3, count 3
dataset /cloud_status: float32, shape (2400)
	attribute _FillValue = nan
	attribute comments = (text block)
| When cloud_status=4 there is an optically
|                                               thick cloud that obscures the signal. Therefore
|                                               it is not possible to discern additional cloud
|                                               layers above it so the vertical visibility and
|                                               highest signal are reported instead.
	attribute flag_0 = "No significant backscatter."
	attribute flag_1 = "One cloud layer detected."
	attribute flag_2 = "Two cloud layers detected."
	attribute flag_3 = "Three cloud layers detected."
	attribute flag_4 = (text block)
| Full obscuration/vertical visibility mode.
|                                             First cloud_base will report vertical visibility
|                                             and second cloud_base will report highest signal
	attribute flag_values = 0.0, 1.0, 2.0, 3.0, 4.0
	attribute long_name = "Cloud detection status."
	attribute units = "1"
dataset /range: int32, shape (1540)
	attribute long_name = "Vertical height bins"
	attribute units = "meters"
// range: first 10, last 15400, count 1540
dataset /time: int64, shape (2400)
	attribute calendar = "proleptic_gregorian"
	attribute comments = "36 second message interval"
	attribute long_name = "Time in UTC"
	attribute units = "seconds since 2022-03-29 00:00:00"
// time: first 0, last 86364, count 2400