Addition of script code into existing indicator to display a slope degree of lines drawn

I require some additions to an existing indicator, mainly lines of text and the angle of a slope created by the Standard Deviation Channel to be displayed in relation to a horizon line.

Script that does the angle calculations attached when manually placing a trendline is available, though will require adaptation to take the correct formatting of +/- degrees.

Most of the work should mainly be simple blending of the indicator and script so the numbers display on the indicator without having to manually run the script, with the remainder being predominantly cosmetic changes.