condition	mean	min	max
0 h after light	5.355315	4.74393	5.9667
4 h after light	8.11505	8.10617	8.12393
8 h after light	7.421035	6.84015	8.00192
4 h after dark	6.479010000000001	5.67403	7.28399
8 h after dark	6.957565	6.73279	7.18234
12 h after dark	5.613135	5.55133	5.67494