condition	mean	min	max
4 h after light	6.730076666666666	6.17056	7.11269
8 h after light	7.03369	6.73376	7.2843800000000005
12 h after light	6.8632800000000005	6.4440800000000005	7.08608
4 h after dark	7.2635	7.22774	7.326789999999999
8 h after dark	7.3360666666666665	7.15298	7.63213
12 h after dark	6.926776666666667	6.50282	7.171060000000001