How high can NAUI RGBM sea level dive tables be used for altitudes?

NAUI RGBM (Reduced Gradient Bubble Model) sea level dive tables can be used effectively for dives at altitudes of up to 610 meters (2000 feet). This is important for divers because altitude can significantly impact dive planning and the physiological effects experienced during and after a dive.

At higher altitudes, the atmospheric pressure decreases, which alters the way nitrogen is absorbed and released by the body during dives. The NAUI RGBM tables take these factors into account, allowing divers to make calculated dives while minimizing the risk of decompression sickness. The correct answer reflects the model's adaptation to altitude, recognizing that at elevations of 610 meters or lower, divers can safely use sea-level tables with appropriate adjustments.

Diving beyond this altitude would require using specific tables or dive computers designed for higher elevations, as they account for the different gas laws at lower pressures.