condition mean min max 2 h after light 1.015832 0.544914 1.65745 6 h after light 1.5878168333333333 0.297374 3.449 10 h after light 0.9061135 0.507542 1.10195 14 h after light 1.0129951666666666 0.331568 1.40745 18 h after light 0.995579 0.3018 1.53767 2 h after dark 0.7760944999999999 0.317152 1.03114