Initial Pressure & Cell Length \\ 4.01148 & 320.761 \\ 7.04035 & 170.086 \\ 10.34273 & 116.045 \\ 13.19939 & 88.2994 \\ 19.91558 & 49.5301 \\ 26.52034 & 38.0767 \\ 33.11497 & 28.6468 \\ 39.80077 & 21.7487 \\