Overall regional summary of the sites with the highest cumulative index in 2018

Region Map Number Mean PVY Index
Northern England 59 229.29
Midlands 85 117.85
East Anglia 54 70.27
South-West 88 33.99
Grampian 18 18.14
Angus & Perthshire 42 9.07
North Scotland 2 4.12
Borders 45 1.85