SERENDIP III was the third incarnation of SERENDIP, led by Stuart Bowyer, which began piggyback operation at the Arecibo radio telescope on April 15, 1992. The SERENDIP III equipment examined 4.2 million channels every 1.7 seconds in a 12 MHz-wide band centered at 429 MHz (equivalent to a wavelength of 70 centimeters). During 10,000 hours of observation time, between 1992 and 1996, the project looked at 93 percent of the sky visible from Arecibo at least once, and 43 percent of the visible sky at least 5 times. Around 100 trillion channels were examined at very high sensitivity. Data analysis, which is still in progress, has turned up a few interesting candidate signals but nothing that strongly suggests an artificial extraterrestrial origin.