Midplane height (〈z〉) and Galactocentric radius (R_gal) for the 3° × 20° × 1.29 km s⁻¹ tiles. The left-hand side panel corresponds to all the H I emission in the |b| < 10° range. The right-hand side panel corresponds to the emission in the structures classified as filaments. The colors indicate the Galactic longitude, l. The vertical dotted line indicates the radius of the solar orbit around the Galactic center.