classDiagram
    class Waterlevel {
        +int id
        +date day
        +string time
        +int max
        +int min
        +int mittel
        +int tumax
        +int tumin
        +int tumittel
    }

    class Weather {
        +int id
        +date day
        +float max_temp
        +float wind_gust
        +float rain_mm
    }