condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.060442 0.0 0.120884 8 h after light 0.0 0.0 0.0 4 h after dark 0.060446 0.0 0.120892 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0