The CHART tab displays a line chart of the Level and Variable selected from either of the Map, Select Level or Latest Data tabs.

The Y-axis is labelled with the Variable's Units, and is bound to the Variable's Value. The X-axis is labelled and bound to the Date.

The selected Level 1, Level 2 and Level 3 is displayed at the top of the CHART tab, followed by the smart devices' current time.

To change the selected Level or Variable, simply navigate to either the Map or Select Level tabs, and update your Level selection.

View the Variable's Value for a Specific Monitoring Date and Time

1. Tap and hold your finger anywhere on the Chart, aligning your finger with the X-axis of where you would like to see the Value for that Date and Time.
   1. A cross-hair will appear on the screen, and is centred on the Variable's Value and the Date and Time of where your finger is located.
   2. The Variable's Value, rounded to three decimal places, will appear on the Y-axis in blue text and is aligned with the horizontal line of the cross-hair.
   3. The Date will appear on the X-axis in blue text, and is aligned with the vertical line of the cross-hair.
   4. A pop-up will appear at the top-right of the chart, displaying both the Date and Time, as well as the Variable's Value (rounded to two decimal places).