condition mean min max 4 h after light 1.99254 1.97807 2.00701 8 h after light 2.310835 1.8787 2.74297 12 h after light 3.19613 2.73985 3.65241 4 h after dark 5.449153333333333 3.22287 6.62859 8 h after dark 3.18414 2.29417 4.58199 12 h after dark 3.8859066666666666 3.14674 4.53795