condition	mean	min	max
4 h after light	18.4075	18.2544	18.5606
8 h after light	8.452705	7.9093	8.99611
12 h after light	7.12653	6.72593	7.52713
4 h after dark	3.57273	3.16467	3.93747
8 h after dark	22.459633333333333	19.4759	24.8193
12 h after dark	5.086973333333334	4.33476	5.7763