condition	mean	min	max
4 h after light	15.5785075	14.148461	17.008554
8 h after light	20.076354000000002	18.155296	21.997412
12 h after light	15.156769	13.879677	16.433861
4 h after dark	15.6337265	15.440789	15.826664
8 h after dark	16.001353	15.568845	16.433861
12 h after dark	20.279986	20.279986	20.279986