CTD-data are listed in HM2015620_CTD.txt 
Data from analysis of water samples and CTD-data from when the Niskin was closed are listed in HM2015620_BTL.txt 
Data are comma separated and use nan as fill value 
Varaible names and meaning of flags are explained in HM2015620_meta_data.txt 
Units are given in HM2015620_meta_data.txt