Typed unit string literals for pressure values to prevent unit confusion at the call site.
mb (millibar) is numerically identical to hPa by SI definition (CGPM 1983,
1 mb = 100 Pa = 1 hPa). It is retained as a distinct unit so call sites can match
whichever label the source data uses: METAR SLP groups report "mb", Q-code altimeter
groups report "hPa".
Typed unit string literals for pressure values to prevent unit confusion at the call site.
mb(millibar) is numerically identical tohPaby SI definition (CGPM 1983, 1 mb = 100 Pa = 1 hPa). It is retained as a distinct unit so call sites can match whichever label the source data uses: METAR SLP groups report "mb", Q-code altimeter groups report "hPa".