condition	mean	min	max
4 h after light	16.5389175	16.218377	16.859458
8 h after light	20.375411999999997	19.498195	21.252629
12 h after light	18.937144	18.937144	18.937144
4 h after dark	20.788	20.330412	21.245588
8 h after dark	19.5327445	16.247228	22.818261
12 h after dark	20.767469	20.767469	20.767469