# Dropping gage 24 (mach) because of more than one day reported. 1.9mm ( 0.07in) # Dropping gage 28 (mccaul) because of time between readings. # Dropping gage 39 (ritchie) because of more than one day reported. 4.2mm ( 0.17in) -86.56306 34.72639 7.62mm (0.30in) 32(welch) > 7.3 the next highest value. COV= 1.9006