condition mean min max 4 h after light 1.2236150000000001 1.10595 1.34128 8 h after light 1.030404 0.994868 1.06594 12 h after light 0.9477855 0.942226 0.953345 4 h after dark 1.37325 1.25969 1.48681 8 h after dark 1.183111 0.925182 1.44104 12 h after dark 1.211125 1.18089 1.24136