condition mean min max 2 h after light 2.8935933333333335 1.3847 4.54331 6 h after light 2.502262 0.923002 3.61464 10 h after light 2.77249 1.45194 4.23056 14 h after light 2.3757468333333334 0.984741 3.18981 18 h after light 2.312275 0.830115 4.93101 2 h after dark 3.943371 0.898816 6.77863