condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 1.3166666666666665e-05 0.0 3.95e-05 12 h after dark 0.0 0.0 0.0