Highcharts help.

Custom Date Range / Export

Please be aware that it will only show the data from the start of our monitoring programme for this site. When selecting large date ranges please be patient as the result may take time to return all the data required. If requesting more than 6 months' worth of data, please note that the chart will reduce down the intervals of data displayed. If you would like to export any results, please select the menu icon in the top right of the chart to select the format you require.