condition	mean	min	max
4 h after light	4.230365	3.25426	5.20647
8 h after light	5.14979	4.65007	5.64951
12 h after light	22.94385	21.9539	23.9338
4 h after dark	42.26765	40.3212	44.2141
8 h after dark	33.29805	32.7112	33.8849
12 h after dark	17.56005	16.828	18.2921