condition	mean	min	max
4 h after light	7.665436666666667	7.56993	7.795210000000001
8 h after light	7.553646666666667	7.15406	7.8042300000000004
12 h after light	7.668896666666667	7.61295	7.721430000000001
4 h after dark	7.75733	7.591189999999999	7.878769999999999
8 h after dark	8.02789	7.92293	8.21177
12 h after dark	7.9532066666666665	7.8459	8.035969999999999