Fig. 5

Latitudinal profiles of auroral energy flux averaged over the 1400–1600 MLT sector for the a Northern and b Southern Hemispheres. In each panel the red trace is for IMF B_y > 2 nT and the blue trace is for IMF B_y < − 2 nT. The vertical line segments are one standard deviation of the sample means. c, d Are in the same format as (a, b) but for the prenoon 0900–1100 MLT sector. The insert values R is the red-to-blue energy flux ratio at the flux peak and, in the parenthesis, integrated over the latitude