Distances of the four WAs (WA₁, WA₂, WA₃, WA₄) and four obscurer components from the center of NGC 3227. Here, OC_L is the low-ionization obscurer component and OC_H is the high-ionization obscurer component. The symbols “◂” for the WAs represent the upper limits of the distance estimated by the assumption that the thickness of the WA cloud does not exceed its distance to the SMBH (see Eq. (2)). The symbols “↦” for the WAs represent the lower limits of the distance estimated by the assumption that the outflow velocities of winds are larger than or equal to their escape velocities (see Eq. (6)). The symbols “◃” for the WAs represent the upper limits of the distance estimated by the upper limits of the recombination timescale (see Eq. (7)). The symbols “▸” and “◂” for the obscurer components represent the lower and upper limits of the distance estimated by the range of the crossing time (see Eq. (10)). The radial location of the optical BLR of NGC 3227 is estimated by the time lag between the Hβ line and continuum at 5100 Å (Denney et al. 2009). The inner radii of the torus are estimated by the dust sublimation radius (see Eq. (8)) and its outer radii are estimated by R_out = Y × R_in (Y = 17 for NGC 3227; Alonso-Herrero et al. 2011). The location of the NLR is estimated by the optical [O III] λ5007 image (Mundell et al. 1995; Schmitt & Kinney 1996).