condition mean min max 4 h after light 0.6682613333333334 0.410502 0.819028 8 h after light 0.652814 0.13536 1.16493 12 h after light 0.7740773333333334 0.526672 1.25899 4 h after dark 1.47074 1.23115 1.71592 8 h after dark 1.2543813333333333 0.391588 2.42685 12 h after dark 2.89934 2.06757 4.05948