Using threshold lines to detect exceedances
MyAir allows you to compare your Zephyr® or Virtual Zephyr data with thresholds of your choice. This enables you to identify periods of exceedance of values of interest. For many users these are likely to include Defra or World Health Organisation recommended limits, but MyAir allows you to compare with any values you want for any measured pollutant, for maximum flexibility.
Scroll through the walk-through below to add threshold lines step-by-step and learn how to add, edit, hide, and remove threshold lines.
- Navigate to: https://portal.earthsense.co.uk/analysis
- Load in your target data with your desired view
- Click on the three dots (widget action menu) in the top right corner of the chart
- Click Threshold line and press add
- Enter your own thresholds of interest or select from existing Defra and WHO limits.
- Thresholds appear on the chart and will be included when downloading an image.
- Thresholds can be edited, hidden or removed using the action menu.
- Click "Show" to redraw a hidden threshold line.
- Clicking "Remove" will delete all threshold lines attached to the chart.
