condition mean min max 0 h after light 2.532585 2.05504 3.01013 4 h after light 5.570365 4.23975 6.90098 8 h after light 1.88742 1.86037 1.91447 4 h after dark 1.63967 1.59001 1.68933 8 h after dark 4.84629 4.0234 5.66918 12 h after dark 2.231185 2.10044 2.36193