condition mean min max 4 h after light 66.9014 61.9279 71.8749 8 h after light 68.09985 66.1293 70.0704 12 h after light 63.6325 62.3882 64.8768 4 h after dark 84.42286666666666 81.7375 87.1508 8 h after dark 79.15273333333333 76.5399 82.839 12 h after dark 80.0745 79.2565 81.1303