condition	mean	min	max
4 h after light	7.049673333333333	6.90498	7.3224
8 h after light	6.93071	6.8798	7.00413
12 h after light	7.2275133333333335	7.1951600000000004	7.25948
4 h after dark	6.9614899999999995	6.8304	7.2066
8 h after dark	6.67029	6.2811900000000005	6.967039999999999
12 h after dark	6.696276666666667	6.55028	6.95945