condition	mean	min	max
4 h after light	18.583525	14.981527	22.185523
8 h after light	16.803344000000003	16.449591	17.157097
12 h after light	17.7284175	16.423666	19.033169
4 h after dark	14.596408	13.044823	16.147993
8 h after dark	18.5123645	18.181801	18.842928
12 h after dark	16.449591	16.449591	16.449591