Transition region, coronal, photospheric, and magnetic field properties, derived from IRIS and SDO observations, for a region in the south-west (SW) of the solar disk shown in Figure 1, including AR 12004 (at top left of the shown field-of-view (FOV)) and AR 12002 (at bottom right, i.e., SW corner). Left column (top to bottom): IRIS Si IV 1393.76 Å line intensity, Doppler shift (blueshifts being due to motions toward the observer, and redshifts to motions away from the observer), line width, and α parameter. Right column (top to bottom): SDO/AIA 1700 Å (dominated by UV photospheric continuum) with contours delineating plage (yellow) and moss (blue) regions; AIA 193 Å and AIA 94 Å coronal images (with peak sensitivity to plasma at ∼1.5 and 8 MK respectively); map of inclination between magnetic field (from nonlinear force-free field (NLFFF) extrapolations) direction (at TR heights) and the line-of-sight. See the main text for a detailed description of how these maps are derived.