condition mean min max 4 h after light 183.420312 173.116725 193.723899 8 h after light 223.372139 217.770518 228.97376 12 h after light 175.2968105 171.156396 179.437225 4 h after dark 173.018354 168.501546 177.535162 8 h after dark 171.6966795 163.150041 180.243318 12 h after dark 148.138955 148.138955 148.138955