condition mean min max 0 h after light 0.0319117 0.0 0.0638234 4 h after light 0.16123815 0.0628143 0.259662 8 h after light 0.0315155 0.0 0.063031 4 h after dark 0.0312855 0.0 0.062571 8 h after dark 0.0630105 0.0627461 0.0632749 12 h after dark 0.125862 0.124476 0.127248