The bandwith data csv export function - Status / Bandwidth Usage / Download Bandwidth Data / "Download Now" - has a bug in Gargoyle 1.14/1.15 (ATH79 and MT7621 Architecture). Item [Bytes Used] not present in csv file.
Gargoyle up to 1.13 exports csv in format:
[Direction],[Interval Length],[Intervals Saved],[IP],[Interval Start],[Interval End],[Bytes Used]
Gargoyle 1.15/1.14 exports csv in format:
[Direction],[Interval Length],[Intervals Saved],[IP],[Interval Start],0,[Interval End]
1.14 tested on TP-Link Archer C2 v3, Archer C58 v1, Archer C6 v2 - all ATH79, Archer C6 v3 - MT7621.
Important note: Gargoyle 1.14 on Raspberry Pi4B exports csv in correct format.
1.15 Archer C6 v3 - MT7621 (Built 20250330-2253 git@ca9ca6a5).