The script provides information of Volume per Price Delta.
This is main indicator of accumulation/distribution .
Blue line - is it. Orange line - is raw data with no Ema-flattening.
For calculations, You can choose between Volume of Instrument and Volume in Fiat currency.
Fiat Volumes prefered, as them shows the real Value-interest.
Fiat Volumes also displays on chart, and you may use scaling for them.