Save Average IV along with individual IV (if checkboxes are selected).

Signed-off-by: Nicola Ferralis <feranick@hotmail.com>
Fix issue with plotting smoothed average.

Signed-off-by: Nicola Ferralis <feranick@hotmail.com>
Keep plotting average when plotting smooth average on live plotting.

Signed-off-by: Nicola Ferralis <feranick@hotmail.com>
Fixed Export of average IV (wrong calculation).

Signed-off-by: Nicola Ferralis <feranick@hotmail.com>