Meaning of letters and numbers in the name of the archive, for example:
RU - the country.
Kamenka - name of the place.
54.69N_38.28E - coordinates of the map center.
R60k - map size 120 to 120 km or 60 km around the center.
T - means that these maps contain information on thermally active zones (zones birth thermals)
If T is not - this means that the usual detailed maps, which do not include a (zones birth thermals)
SE - wind direction in the calculation of maps.