In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.
In this example, don't you think that the ADR-high calculation should be done from the low of the day (yellow arrow)? Currently it is done from the open and/or simply shows the high of the day. Or I'm missing something?