($\boldsymbol S$ = $\boldsymbol C$ = $\boldsymbol B$ = 0)
For $\mathit I = 1$ (${{\mathit \pi}}$, ${{\mathit b}}$, ${{\mathit \rho}}$, ${{\mathit a}}$): ${\mathit {\mathit u}}$ ${\mathit {\overline{\mathit d}}}$, ( ${\mathit {\mathit u}}$ ${\mathit {\overline{\mathit u}}}−$ ${\mathit {\mathit d}}$ ${\mathit {\overline{\mathit d}}})/\sqrt {2 }$, ${\mathit {\mathit d}}$ ${\mathit {\overline{\mathit u}}}$;
for $\mathit I = 0$ (${{\mathit \eta}}$, ${{\mathit \eta}^{\,'}}$, ${{\mathit h}}$, ${{\mathit h}^{\,'}}$, ${{\mathit \omega}}$, ${{\mathit \phi}}$, ${{\mathit f}}$, ${{\mathit f}^{\,'}}$): ${\mathit {\mathit c}}_{{\mathrm {1}}}$( ${{\mathit u}}{{\overline{\mathit u}}}$ $+$ ${{\mathit d}}{{\overline{\mathit d}}}$ ) $+$ ${\mathit {\mathit c}}_{{\mathrm {2}}}$( ${{\mathit s}}{{\overline{\mathit s}}}$ )
INSPIRE search

${{\boldsymbol f}_{{0}}{(980)}}$ $I^G(J^{PC})$ = $0^+(0^{+ +})$ 

See the review on "Scalar Mesons below 2 GeV."
${{\mathit f}_{{0}}{(980)}}$ MASS   $990 \pm20$ MeV 
${{\mathit f}_{{0}}{(980)}}$ WIDTH   $10\text{ to }100 $ MeV 
$\Gamma_{1}$ ${{\mathit \pi}}{{\mathit \pi}}$  seen 476
$\Gamma_{2}$ ${{\mathit K}}{{\overline{\mathit K}}}$  seen 36
$\Gamma_{3}$ ${{\mathit \gamma}}{{\mathit \gamma}}$  seen 495
$\Gamma_{4}$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$  495