condition mean min max 4 h after light 12.75389 12.381804 13.125976 8 h after light 12.7381435 12.356592 13.119695 12 h after light 12.341114000000001 12.300424 12.381804 4 h after dark 12.5572485 12.381804 12.732693 8 h after dark 12.321253500000001 12.110042 12.532465 12 h after dark 13.309937 13.309937 13.309937