condition mean min max 4 h after light 15.666418499999999 15.408474 15.924363 8 h after light 16.4446425 15.628301 17.260984 12 h after light 15.6999125 13.640011 17.759814 4 h after dark 15.520393499999999 14.427052 16.613735 8 h after dark 14.29747 13.701851 14.893089 12 h after dark 18.263089 18.263089 18.263089