Percent N2 & Cell Width (mm) \\
38.5 &  2.8 \\
50 &   4.3 \\
52.9 &  5.8 \\
55.6 &  5.5 \\
55.6 &  5.3 \\
57.9 &  7.5 \\
60 &    8.5 \\
63.6 &  10.5 \\