In your measurements, you’ll get an L+R curve which corresponds to a mono signal send to both L and R loudspeakers. This L+R black curve is important because most recordings are mono in lower frequencies and it better represents low frequencies perception. In some cases, the black curve is lower …
I did a comparison between the report you get here and the GRADE report you get with Genelec speakers (those equipped with SAM) : LAvsGRADE.pdf
Especially if your processor has a limited amount of taps, ie 2048 or less, it is wise to start with parametric EQ in the lowest frequencies, under 100Hz with manual EQ, and then measure again and automatically calculate the FIR correction. To ease this procedure, you can use REW sofware, …