In metric units: 4805 meters, 271°C The average drilling speed over 16 days is: 1 cm every ~3 seconds, or 1 inch every ~7 seconds. The press release quotes a

In metric units: 4805 meters, 271°C The average drilling speed over 16 days is: 1 cm every ~3 seconds, or 1 inch every ~7 seconds. The press release quotes a maximum average rate of penetration (ROP) of 95 feet/hour which is: 1 cm every 1.2 seconds, or 1 inch every ~3 seconds. They also quote an instantaneous ROP of over 300 feet/hour which is: 1 cm every 0.4 seconds, or 1 inch every 1 second.