Third set of IRIS data

Some new measurements from data taken by IRIS on 12 September 2014

I've added an additional column to the data.  Column 11 is a measurement of the "power" in the given spectral line.  Here's a plot showing the MgII k and h power.  The x-axis is the power and the y-axis is the number of vertical arcseconds from the center of the Sun.

The total power corresponds as expected to the shape of the spectral lines: less power where the spectrum is dark, more power where the spectrum is bright ---

k (left) and h (right) MgII spectral lines

Although now apparent when looking at the image, the plot of total power shows that the h lines are typically brighter than the k lines.