Table 4: Observed mean and maximum radio flux densities and estimated distances for the six Z sources and GX 13+1. This table is reproduced from Tables 2 and 3 in Fender & Hendry (2000), with updated values for GX 13+1.
Source Meana Maxb distance Refs
  (mJy) (mJy) (kpc)  
Sco X-1 $10 \pm 3$ 22 $2.0 \pm 1.0$ 1, 2
GX 17+2 $1.0 \pm 0.3$ 13.4 $7.5 \pm 2.3$ 1, 3
GX 349+2 $0.6 \pm 0.3$ 1.3 $5.0 \pm 1.5$ 4, 5
Cyg X-2 $0.6 \pm 0.2$ 3.4 $8.0 \pm 2.4$ 1, 6, 7
GX 5-1 $1.3 \pm 0.3$ 1.6 $9.2 \pm 2.7$ 1
GX 340+0 $0.6 \pm 0.3$ 0.6 $11.0 \pm 3.3$ 8
GX 13+1 $1.8 \pm 0.3$ 7.7 $7 \pm 1$ 9-13
a Mean cm radio flux density.
b Maximum radio flux density at 6 cm.
Refs. 1: Penninx (1989); 2: Bradshaw et al. (1999); 3: Penninx et al. (1988); 4: Cooke & Ponman (1991); 5: Christian & Swank (1997); 6: Hjellming et al. (1990a); 7: Cowley et al. (1979); 8: Penninx et al. (1993); 9: Grindlay & Seaquist (1986); 10: Garcia et al. (1988); 11: Berendsen et al. (2000); 12: Bandyopadhyay et al. (1999); 13: this work.

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