-dayschart('chart1', 'Tag', 1, '%H:%M');
-dayschart('chart7', 'Woche', 7, '%a %d');
-dayschart('chart31', 'Monat', 31, 'Woche %V');
-dayschart('chart365', 'Jahr', 365, '%b %d');
+dayschart('chart_water_1', 'Der See (Tag)', 1, '%H:%M');
+dayschart('chart_water_7', 'Der See (Woche)', 7, '%a %d');
+dayschart('chart_water_31', 'Der See (Monat)', 31, 'Woche %V');
+dayschart('chart_water_365', 'Der See (Jahr)', 365, '%b %d');