Tube Diameter (mm) & Initial Pressure (atm) & Initial Pressure (kPa) \\ 77.2125 & 3.8632 & 391.439 \\ 89.3903 & 3.0031 & 304.289 \\ 151.1630 & 1.9003 & 192.548 \\ 218.3480 & 1.1990 & 121.489 \\