condition mean min max 4 h after light 9.9561025 9.650615 10.26159 8 h after light 9.276414500000001 8.708522 9.844307 12 h after light 9.166418 8.883634 9.449202 4 h after dark 9.333300000000001 9.015985 9.650615 8 h after dark 9.981926000000001 9.650615 10.313237 12 h after dark 11.070724 11.070724 11.070724