Zoom: choose a mode, then drag a rectangle in either graph. Time zoom affects both graphs; vertical zoom affects only the selected graph. Click a station in the legend to hide/show it in both graphs. Tank level uses black open hexagons and the right-hand axis in metres. Station symbols and colours match between flow and pressure. Missing readings are gaps; negative values are retained.

Resolution: 15 minutes. Last day/week are measured back from the latest plotted reading.

CSV includes visible series in the current time window, with one column per measurement and station. Times use UTC+05:30. Vertical axis limits do not remove values from the export.