condition	mean	min	max
4 h after light	8460.183179	8163.933214	8756.433144
8 h after light	8624.2590145	8264.232057	8984.285972
12 h after light	8528.983499	8390.441816	8667.525182
4 h after dark	9239.261364	9202.364938	9276.15779
8 h after dark	7328.922705	6705.230491	7952.614919
12 h after dark	6312.695897	6312.695897	6312.695897