condition	mean	min	max
4 h after light	19.8337445	17.973158	21.694331
8 h after light	18.5777955	17.485288	19.670303
12 h after light	18.350565	14.584112	22.117018
4 h after dark	12.6322505	9.619155	15.645346
8 h after dark	12.8609555	10.99014	14.731771
12 h after dark	19.415535	19.415535	19.415535