To what altitude can standard NAUI dive tables be used?

The standard NAUI dive tables are designed to be used up to an altitude of 300 meters, or 1,000 feet. At this altitude, the effects of altitude on diving are accounted for, allowing divers to plan their dives safely and effectively while considering the changes in atmospheric pressure. Beyond this altitude, the tables may not provide accurate information, as the physiological effects on a diver can vary significantly due to decreased atmospheric pressure, which increases the risk of decompression sickness. Therefore, using the tables strictly within the limitations specified ensures that safety guidelines are adhered to, supporting the health and well-being of the diver.