condition mean min max 4 h after light 6.42288 6.29262 6.55314 8 h after light 5.237500000000001 4.28174 6.19326 12 h after light 6.4628049999999995 4.60183 8.32378 4 h after dark 9.85794 8.95858 10.7573 8 h after dark 8.067250000000001 6.87152 9.26298 12 h after dark 8.45411 7.03559 9.87263