condition	mean	min	max
4 h after light	15601.7	15601.7	15601.7
8 h after light	19888.050000000003	17983.2	21792.9
12 h after light	19549.45	18816.0	20282.9
4 h after dark	21169.35	17533.0	24805.7
8 h after dark	16519.15	15906.8	17131.5
12 h after dark	12476.650000000001	9430.2	15523.1