condition	mean	min	max
4 h after light	19.1713825	17.764718	20.578047
8 h after light	21.6771775	20.649338	22.705017
12 h after light	18.7676745	17.877331	19.658018
4 h after dark	20.96348	20.799717	21.127243
8 h after dark	18.251728	17.512461	18.990995
12 h after dark	49.148606	49.148606	49.148606