condition mean min max 4 h after light 59.52758 56.574211 62.480949 8 h after light 75.2378485 67.547371 82.928326 12 h after light 151.3079265 61.876287 240.739566 4 h after dark 50.408575 43.340027 57.477123 8 h after dark 90.4464355 87.452243 93.440628 12 h after dark 40.097374 40.097374 40.097374