condition	mean	min	max
4 h after light	20.8277255	20.404364	21.251087
8 h after light	17.9090225	16.810753	19.007292
12 h after light	16.078995	16.027175	16.130815
4 h after dark	17.080785	16.12448	18.03709
8 h after dark	17.2642515	16.533448	17.995055
12 h after dark	16.338107	16.338107	16.338107