condition mean min max 4 h after light 0.6869514999999999 0.610333 0.76357 8 h after light 2.0923800000000004 2.00232 2.18244 12 h after light 9.357479999999999 9.27047 9.44449 4 h after dark 9.885535 9.75917 10.0119 8 h after dark 4.23186 3.99889 4.46483 12 h after dark 1.679865 1.67637 1.68336