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 0.0087738 0.0 0.0175476 8 h after dark 0.01311294 0.00879358 0.0174323 12 h after dark 0.0159462 0.0145779 0.0173145