HDF5 file, superblock version 2
group /
dataset /D20: int16, shape (1, 3251, 4500)
	attribute long_name = "Depth of 20C Isotherm"
	attribute standard_name = "d20"
	attribute units = "m"
dataset /lat: float64, shape (3251)
	attribute _FillValue = nan
// lat: first -80.0, last 90.0, count 3251
dataset /lon: float64, shape (4500)
	attribute _FillValue = nan
// lon: first -180.0, last 179.9200439453125, count 4500
dataset /time: float64, shape (1)
	attribute _FillValue = nan
// time: first 107664.0, last 107664.0, count 1