OSMC flattened observations from GTS, providing tupled data availability

cdm_data_type = Point
VARIABLES:
platform_id (Internal OSMC platform ID)
platform_code (WMO id or Ship call sign)
platform_type
country
time (observation date, seconds since 1970-01-01T00:00:00Z)
latitude (degrees_north)
longitude (degrees_east)
observation_depth
sst (sea surface temperature, Deg C)
atmp (air temperature, Deg C)
precip (precipitation, mm)
sss (sea surface salinity, 1)
ztmp (profile water temperature, Deg C)
zsal (profile salinity)
slp (sea level pressure, hPa)
windspd (wind speed, m/s)
winddir (wind from direction, Deg true)
wvht (sea surface wave significant height, m)
waterlevel (m)
clouds (cloud cover, oktas)
dewpoint (dew point temperature, Deg C)
uo (eastward sea water velocity, m s-1)
vo (northward sea water velocity, m s-1)
wo (upward sea water velocity, m s-1)
rainfall_rate (m s-1)
hur (relative humidity)
sea_water_elec_conductivity (sea water electrical conductivity, S m-1)
... (8 more variables)