condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.2581465 0.0 0.516293 8 h after light 0.259037 0.0 0.518074 4 h after dark 0.77449 0.0 1.54898 8 h after dark 0.517906 0.515733 0.520079 12 h after dark 1.546065 1.0459 2.04623