condition mean min max 3 h after light 1.30373 1.21034 1.43567 6 h after light 0.7712493333333333 0.534925 0.929274 9 h after light 0.7699406666666667 0.346519 1.52529 12 h after light 1.5873925 1.23575 2.5215 3 h after dark 1.2196903333333333 0.929819 1.76261 6 h after dark 1.281153 0.813599 1.67016 9 h after dark 1.0574896666666667 0.960739 1.17607 12 h after dark 1.095455 1.00842 1.18249