condition mean min max 4 h after light 12.998465 5.54563 20.4513 8 h after light 12.90165 11.0688 14.7345 12 h after light 12.008130000000001 3.20596 20.8103 4 h after dark 2.739595 2.57894 2.90025 8 h after dark 7.58384 7.43419 7.73349 12 h after dark 10.58006 8.16122 12.9989