condition mean min max 4 h after light 10.414926666666666 10.37595 10.47597 8 h after light 9.148159999999999 9.06758 9.24598 12 h after light 7.56872 7.21707 7.993310000000001 4 h after dark 6.388983333333334 6.29419 6.44819 8 h after dark 7.322533333333333 7.03302 7.8143199999999995 12 h after dark 10.110603333333334 10.047410000000001 10.16423