condition	mean	min	max
0 h after light	21.03935	16.6537	25.425
4 h after light	20.97095	14.9459	26.996
8 h after light	51.98885	50.7669	53.2108
4 h after dark	51.96265	51.1028	52.8225
8 h after dark	36.24595	31.0788	41.4131
12 h after dark	23.17185	22.4612	23.8825