condition mean min max 4 h after light 13.066368 12.523151 13.609585 8 h after light 12.4465295 12.040743 12.852316 12 h after light 12.1536755 12.071279 12.236072 4 h after dark 12.7355165 11.958569 13.512464 8 h after dark 11.89535 10.982052 12.808648 12 h after dark 13.615643 13.615643 13.615643