What does a downward pointing triangle above an upward pointing triangle indicate on a dive computer?

The symbol of a downward pointing triangle above an upward pointing triangle on a dive computer signifies that the diver is in the appropriate decompression range. This visual cue indicates that the diver is currently at a depth and time where they can safely perform decompression stops, making it essential for avoiding decompression sickness.

Understanding this symbol is crucial for maintaining safety during a dive, as it helps the diver adhere to the necessary decompression procedures required after spending time at depths where inert gases can accumulate in the body. Following such procedures minimizes the risks associated with rapid ascents and allows for safe off-gassing of these gases while ascending.