condition mean min max 4 h after light 11.242969 7.675717 13.83416 8 h after light 7.652012333333333 7.024017999999999 8.392938000000001 12 h after light 6.339599666666667 4.238784 7.6818550000000005 16 h after light 12.068580333333333 8.616061 15.75041 4 h after dark 22.35924 18.576 25.579629999999998 8 h after dark 12.645232 9.134256 17.1714