Table 3: The p-flux-weighted average polarization angle of the linearly polarized OH maser emission at 1612 MHz and/or 1667 MHz (PA1612, PA1667) and the position angle of nebula long axis (PA $_{\rm axis}$) taken from optical and/or infrared or radio images.
IRAS name Type N PA1612($^\circ $) $\sigma_{\rm PA_{1612}}$($^\circ $) PA1667($^\circ $) $\sigma_{\rm PA_{1667}}$($^\circ $) PA $_{\rm axis}$($^\circ $) Refs.
07331+0021 d 3 -32.3 4.7     89(30) 1
07399-1435 c 4     48.0 6.7 23(5) 1, 2
08005-2356 s 2 22.1 4.4     -47(5) 3
16342-3814 d, d 4 -54.8 8.4 -51.6 5.6 69(3) 3
17150-3224 s, c 5 -72.2 32.9 -37.2 17.2 -33(3) 3
17393-3004 s 2 -23.0 6.5     13(3) 4
18266-1239 c 2 50.6 7.2     66(30) 5
18276-1431 c, c 1 47.0 5.0 77.0 14.8 20(3) 6
18450-0148 c, s 3 82.1 18.5 75.3 3.8 63(2) 7
19114+0002 c, c 2 -84.8 8.4 -84.0 7.3 21(3) 3
19219+0947 c 2 -0.7 4.5     34(5) 8
19255+2123 s 5 64.5 2.5     27(5) 9, 10
22036+5306 c 3 -73.8 5.3     66(2) 11
Type of spectrum: s - single peak, d - two features, c - complex; N: number of observations used to derive PA1612 and PA1667;
references for PA $_{\rm axis}$: (1) Meixner et al. (1999), (2) Kastner et al. (1998), (3) Ueta et al. (2000), (4) Philipp et al. (1999), (5) Chapman (1988), (6) Bains et al. (2003a), (7) Imai et al. (2002), (8) Seaquist & Davis (1983), (9) Miranda et al. (2000), (10) Miranda et al. (2001), (11) Sahai et al. (2003).

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