condition mean min max 4 h after light 8.6286415 8.376036 8.881247 8 h after light 8.481853 7.463057 9.500649 12 h after light 7.9770285 7.923733 8.030324 4 h after dark 7.300993999999999 7.179421 7.422567 8 h after dark 8.590676 7.47796 9.703392 12 h after dark 10.416704 10.416704 10.416704