condition	mean	min	max
4 h after light	8.6022565	8.289218	8.915295
8 h after light	7.9233674999999995	7.7855	8.061235
12 h after light	6.7926655	6.724174	6.861157
4 h after dark	7.6985215	7.473572	7.923471
8 h after dark	7.680129	7.588697	7.771561
12 h after dark	6.799297	6.799297	6.799297