[unity] DWD ICON: Model level not honored when computing filenames about gribmagic HOT 1 OPEN

for levels, DWD uses two flavors: 'pressure-level' (like 975, 950, 925, 900, 800..200 etc hPa - 10 steps in total) and 'model-level' variant, see for example here which have 65-90 levels (I do not understand the difference between 'full height level' and 'half height level' in these models yet)

the pressure-level layers are kind of standard in the forecasting trade but has much less vertical resolution than model level and this is the very reason why I started looking at DWD data in raw form

here's is the repo which brought me upon the trail of model-level: https://github.com/fvalka/icon-skewt-plot

look at the vertical wind barbs on the right hand side - here is for comparison a more traditional pressure-level SkewT diagram

from gribmagic.