1.5 NC−11.5\mathrm{\ NC}^{-1}1.5 NC−1
2.1 NC−12.1\mathrm{\ NC}^{-1}2.1 NC−1
2.2 NC−12.2\mathrm{\ NC}^{-1}2.2 NC−1
2.5 NC−12.5\mathrm{\ NC}^{-1}2.5 NC−1
