A station's lhpClass on the documented station scale, shared by the minClass
filter and the situation overview so the two never disagree: an integer from -1
to 4, or null for a gauge without a flood classification (lhpClass null or
absent). Anything else (99, 2.5, the string "3") means the upstream scale or type
changed; counting it as "no data" or filtering it by number could hide a flood,
so it throws a HochwasserzentralenParseError instead (CLI exit 1).
A station's lhpClass on the documented station scale, shared by the
minClassfilter and the situation overview so the two never disagree: an integer from -1 to 4, ornullfor a gauge without a flood classification (lhpClassnull or absent). Anything else (99, 2.5, the string "3") means the upstream scale or type changed; counting it as "no data" or filtering it by number could hide a flood, so it throws a HochwasserzentralenParseError instead (CLI exit 1).