condition mean min max 4 h after light 2435.7 2435.7 2435.7 8 h after light 1851.85 1615.2 2088.5 12 h after light 948.35 392.3 1504.4 4 h after dark 515.15 360.2 670.1 8 h after dark 915.5999999999999 442.9 1388.3 12 h after dark 1964.25 1144.2 2784.3