condition mean min max 4 h after light 13.8096055 12.031504 15.587707 8 h after light 11.587464 9.93594 13.238988 12 h after light 11.172731500000001 10.884734 11.460729 4 h after dark 8.785301 8.513127 9.057475 8 h after dark 9.8729725 9.507905 10.23804 12 h after dark 17.511566 17.511566 17.511566