From the dataset abstract

Dataset abstract The data consist of the hydrometeor particle size distribution for particles with a size range (average diameter) from 36 to 490 μm (with the last bin including all...

Source: Hydrometeor particle size distribution data collected using a snow particle counter on board the R/V Akademik Tryoshnikov in the Southern Ocean during the austral summer of 2016/17 as part of the Antarctic Circumnavigation Expedition (ACE)