condition mean min max 4 h after light 1133.104771 1081.616672 1184.59287 8 h after light 1089.1267345 937.558488 1240.694981 12 h after light 1364.8342295000002 1359.782556 1369.885903 4 h after dark 1441.811491 1359.087717 1524.535265 8 h after dark 1106.1823020000002 1018.753291 1193.611313 12 h after dark 1195.511076 1195.511076 1195.511076