condition mean min max 4 h after light 0.0371336 0.0 0.0742672 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 0.0080471 0.0 0.0160942 12 h after dark 0.0 0.0 0.0