condition mean min max 4 h after light 2889.1 2889.1 2889.1 8 h after light 3100.6499999999996 3076.2 3125.1 12 h after light 3084.45 3020.9 3148.0 4 h after dark 3430.55 2984.0 3877.1 8 h after dark 3579.0 3514.3 3643.7 12 h after dark 3343.45 3203.3 3483.6