Refer to the current Denver sectional excerpt near Springer. An obstruction there is charted as "6133 (300)." What is its height above ground level (AGL)?

Why: The parenthesized figure below a charted obstruction's elevation is always its height above ground level: 300 feet AGL here. The unparenthesized 6,133 is the obstruction's top elevation above mean sea level (MSL), not its AGL height.

• 6,133 is the MSL elevation (the unparenthesized number), not the AGL height, which is the parenthesized figure.
• 6,133 minus 300 approximates the ground elevation at the obstruction's base, not its AGL height — the AGL height is simply the parenthesized 300 printed directly on the chart, with no subtraction needed.