condition	mean	min	max
0 h after light	21.573	21.233	21.913
4 h after light	13.31325	12.3278	14.2987
8 h after light	16.7232	16.7202	16.7262
4 h after dark	17.427100000000003	16.5254	18.3288
8 h after dark	23.49905	22.7269	24.2712
12 h after dark	19.92905	17.5334	22.3247