Detection onset calculation bug

[wonkoderverstaendige]

How can that be?

05-Dec-13 23:24:26.845 Subject None
05-Dec-13 23:24:26.845 Sync None
05-Dec-13 23:24:26.845 redLED (533.1683501683501, 177.48821548821547)
05-Dec-13 23:24:26.845 blueLED (535.6156156156155, 168.47447447447445)
05-Dec-13 23:24:26.845 greenLED None