condition mean min max 4 h after light 1.810605 1.62125 1.99996 8 h after light 1.972095 1.58534 2.35885 12 h after light 1.610185 1.50032 1.72005 4 h after dark 1.8272566666666668 1.38712 2.34114 8 h after dark 1.9728066666666668 1.75788 2.29374 12 h after dark 1.83114 1.47099 2.35961