condition mean min max 4 h after light 3.56377 0.0 7.12754 8 h after light 0.962455 0.0 1.92491 12 h after light 0.0 0.0 0.0 4 h after dark 1.02741 0.0 2.05482 8 h after dark 0.514865 0.0 1.02973 12 h after dark 1.707065 0.0 3.41413