Fix export at river km's for issue1275 Rrenkert explained that the intention was to scale the Waterlevels because they should be in centimeters at a gauge and in meters otherwise. This appears very strange to me and should be clarified.

select.abflusstafel = \
    SELECT ABFLUSSTAFEL_NR, \
           ABFLUSSTAFEL_BEZ, \
           GUELTIG_VON, \
           GUELTIG_BIS, \
           PEGELNULLPUNKT, \
           AT.BFG_ID \
    FROM ABFLUSSTAFEL AT \
    WHERE MESSSTELLE_NR LIKE :number