condition mean min max 4 h after light 1.8904649999999998 1.87489 1.90604 8 h after light 1.72293 1.43107 2.01479 12 h after light 1.94193 1.74939 2.13447 4 h after dark 2.486666666666667 2.12297 2.77857 8 h after dark 2.206433333333333 1.66794 2.54189 12 h after dark 1.98876 1.92031 2.06345