condition	mean	min	max
4 h after light	28731.87889	26261.27	32212.86667
8 h after light	27594.02	26076.13	29844.37667
12 h after light	21702.711113333335	19786.53	24811.08667
1.5 h after dark	19371.211113333335	17960.12667	20196.69
5.5 h after dark	19820.85667	17927.29667	22258.56667
9.5 h after dark	22026.60222	21026.91	23940.38333