condition	mean	min	max
4 h after light	18.3379	18.0119	18.6639
8 h after light	19.72025	18.7262	20.7143
12 h after light	21.55235	21.1245	21.9802
4 h after dark	42.08475	41.0505	43.119
8 h after dark	29.2376	28.667	29.8082
12 h after dark	26.601950000000002	25.167	28.0369