condition mean min max 0 h after light 0.734127 0.684534 0.78372 4 h after light 0.2956985 0.192832 0.398565 8 h after light 0.9358905 0.677241 1.19454 4 h after dark 1.87587 1.54276 2.20898 8 h after dark 0.821894 0.776985 0.866803 12 h after dark 0.770637 0.585955 0.955319