condition mean min max 4 h after light 4009.69 3678.35 4226.55 8 h after light 4235.821666666667 4059.753333 4340.886667 12 h after light 3817.8022223333332 3602.17 4099.33 1.5 h after dark 3863.98 3470.35 4211.806667 5.5 h after dark 4080.122222 3935.633333 4331.87 9.5 h after dark 3980.3522223333334 3852.896667 4056.136667