Connection between gas kinematics, temperature, and metallicity. Each panel shows the 2D histogram (i.e., distribution of gas mass) in the plane of radial velocity versus: temperature (top), and metallicity (middle). The bottom panel shows the cross correlation of temperature and metallicity. The colors show the conditional fraction of mass at fixed x-axis value, i.e., each column is normalized such that the sum equals unity. Gas velocity and temperature are connected: cool gas is typically inflowing while hot gas is typically outflowing.