Oblique corrections from triplet quarks

We present general formulas for the oblique-correction parameters $S$, $T$, $U$, $V$, $W$, and $X$ in an extension of the Standard Model having arbitrary numbers of singlet, doublet, and triplet quarks with electric charges $-4\mathrm{/}3$, $-1\mathrm{/}3$, $2\mathrm{/}3$, and $5\mathrm{/}3$ that mix with the standard quarks of the same charge.