**Table 1:** Observed and derived parameters for CO(4-3) in 4C 41.17.
Parameter	Red component	Blue component	Total
RA(J2000)^a (peak)	6 $^{\rm h}$ 50 $^{\rm m}$ 52 $.\!\!^{\rm s}$ 24	6 $^{\rm h}$ 50 $^{\rm m}$ 52 $.\!\!^{\rm s}$ 12	6 $^{\rm h}$ 50 $^{\rm m}$ 52 $.\!\!^{\rm s}$ 17
DEC(J2000)^a (peak)	41 $\hbox {$^\circ $ }$ 30 $^\prime$ 31 $.\!\!^{\prime\prime}$ 6	41 $\hbox {$^\circ $ }$ 30 $^\prime$ 30 $.\!\!^{\prime\prime}$ 3	41 $\hbox {$^\circ $ }$ 30 $^\prime$ 30 $.\!\!^{\prime\prime}$ 9
$\int S_{\rm CO}~{\rm d}V$ [Jy km s^-1 ${\rm ~km~s^{-1}}$ ]	$1.2\pm 0.15$	$0.6\pm 0.15$	$1.8\pm 0.2$
Central velocity ^b [km s^-1]	$-130\pm 50$	$-550\pm 100$	$-285\pm100$
Velocity width [km s^-1]	$500\pm 100$	$500\pm 150$	$1000\pm150$
$L^{\prime}_{\rm CO}$ (4-3) [K km s^-1 ${\rm ~km~s^{-1}}$ pc²]	$4.4\times 10^{10}$	$2.2\times 10^{10}$	$6.7\times 10^{10}$
M(H₂) [ $M_{\odot}$ ]	$3.6\times 10^{10}$	$1.8\times 10^{10}$	$5.4\times 10^{10}$