condition mean min max 4 h after light 1.9870999999999999 1.64217 2.33203 8 h after light 1.221155 0.97954 1.46277 12 h after light 1.22515 1.18486 1.26544 4 h after dark 2.55059 1.84807 3.25311 8 h after dark 1.7531750000000001 1.6805 1.82585 12 h after dark 2.199415 2.18273 2.2161