condition	mean	min	max
4 h after light	7.440553333333334	7.209980000000001	7.66033
8 h after light	7.429563333333334	7.052960000000001	7.683860000000001
12 h after light	7.39285	6.91518	7.744739999999999
4 h after dark	7.2212233333333335	6.908710000000001	7.517180000000001
8 h after dark	6.97433	6.753480000000001	7.1017
12 h after dark	7.193426666666667	6.8505	7.54247