(a) Distribution of three components of the magnetic field (B_x, B_y, B_z) in AR 12673, which was observed by Hinode/SOT-SP fast-map scanning from 06:14:05 UT on 2017 September 6. The background white/black and green lines are similar to those in Figures 2(a)–(c), except that the background B_z level is in the range of ±1500 G. The small arrows indicate the orientation and strength of the horizontal components (B_x, B_y) of the photospheric magnetic fields, whose magnitudes are greater than 100 G. (b) Distribution of the magnetic shear angles relative to the potential field. The red/blue regions indicate counterclockwise/clockwise shear in the range of ±180°. The black lines represent the magnetic polarity inversion lines, similar to the green lines in panel (a). The red/black circles in panel (a)/(b) denote the intruding negative peninsula. Additionally, the southern half of P2 is located outside of the SP scanning field of view.