condition mean min max 4 h after light 5.2917 5.18507 5.4272800000000005 8 h after light 5.146373333333333 4.977119999999999 5.32263 12 h after light 4.881539999999999 4.81724 4.929869999999999 4 h after dark 4.898456666666666 4.80601 4.977 8 h after dark 4.978540000000001 4.93055 5.0197400000000005 12 h after dark 5.166773333333333 5.10827 5.20434