Group table for the character group for $\textrm{Gal}(K/\mathbb{Q})$

$K$ is the global number field defined by \(x^{2} \) \(\mathstrut +\mathstrut 78 \)

$\times$ \(\chi_{ 312 } ( 1, ·)\) \(\chi_{ 312 } ( 77, ·)\)
\(\chi_{ 312 }(1, ·)\) \(\chi_{ 312 } ( 1, ·)\) \(\chi_{ 312 } ( 77, ·)\)
\(\chi_{ 312 }(77, ·)\) \(\chi_{ 312 } ( 77, ·)\) \(\chi_{ 312 } ( 1, ·)\)