condition	mean	min	max
4 h after light	18.7173	17.4371	19.9975
8 h after light	11.82125	11.6474	11.9951
12 h after light	17.95785	16.983	18.9327
4 h after dark	41.02393333333333	40.2393	42.3711
8 h after dark	35.8619	33.7802	39.4062
12 h after dark	21.2483	15.3948	26.2152