Chapter 22 Appendix K: Allocation of PSUs to quota months across major regional strata (International Territorial Level 2 (ILT2) areas)
This table shows how many Primary Sampling Units (PSU) were allocated to each major geographical strata in each quota month.
| Major Stratum ID | Major Stratum | January | February | March | April | May | June | July | August | September | October | November | December | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Inner London – East | 3 | 3 | 3 | 4 | 3 | 3 | 6 | 3 | 5 | 5 | 4 | 4 | 46 |
| 2 | Inner London – West | 2 | 1 | 2 | 2 | 1 | 2 | 3 | 2 | 2 | 1 | 3 | 3 | 24 |
| 3 | Outer London – East and North East | 2 | 3 | 2 | 1 | 3 | 3 | 1 | 4 | 5 | 2 | 2 | 5 | 33 |
| 4 | Outer London – South | 4 | 1 | 1 | 3 | 1 | 1 | 4 | 1 | 2 | 3 | 3 | 1 | 25 |
| 5 | Outer London West and North West | 3 | 2 | 2 | 3 | 3 | 2 | 3 | 4 | 4 | 5 | 3 | 4 | 38 |
| 6 | Devon and Cornwall | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 4 | 3 | 3 | 3 | 4 | 33 |
| 7 | North Somerset, North East Somerset, Bath, Somerset and Dorset | 3 | 1 | 3 | 2 | 3 | 1 | 3 | 2 | 4 | 3 | 3 | 3 | 31 |
| 8 | Bristol, South Gloucestershire, Gloucestershire and Wiltshire | 2 | 2 | 3 | 3 | 2 | 3 | 4 | 4 | 3 | 4 | 4 | 3 | 37 |
| 9 | Oxfordshire, Buckinghamshire and Berkshire | 4 | 2 | 3 | 2 | 2 | 3 | 5 | 4 | 3 | 5 | 3 | 5 | 41 |
| 10 | Hampshire and Isle of Wight | 2 | 3 | 2 | 2 | 3 | 3 | 3 | 5 | 2 | 2 | 3 | 3 | 33 |
| 11 | Kent | 2 | 2 | 3 | 3 | 2 | 3 | 3 | 4 | 3 | 3 | 3 | 3 | 34 |
| 12 | West Sussex and East Sussex | 1 | 3 | 2 | 1 | 2 | 2 | 2 | 4 | 2 | 4 | 2 | 3 | 28 |
| 13 | Surrey | 1 | 1 | 2 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 2 | 2 | 20 |
| 14 | Essex | 2 | 1 | 2 | 3 | 2 | 2 | 2 | 3 | 4 | 1 | 4 | 4 | 30 |
| 15 | Cambridgeshire, Suffolk and Norfolk | 4 | 4 | 3 | 2 | 4 | 3 | 6 | 5 | 3 | 5 | 5 | 3 | 47 |
| 16 | Hertfordshire and Bedfordshire | 1 | 3 | 2 | 2 | 3 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 31 |
| 17 | Leicestershire, Lincolnshire and Northamptonshire | 4 | 3 | 3 | 3 | 2 | 3 | 4 | 4 | 5 | 5 | 5 | 4 | 45 |
| 18 | Warwickshire and Hereford and Worcester | 0 | 1 | 3 | 2 | 2 | 1 | 3 | 2 | 2 | 3 | 3 | 2 | 24 |
| 19 | West Midlands | 4 | 3 | 3 | 2 | 4 | 3 | 5 | 6 | 3 | 5 | 3 | 5 | 46 |
| 20 | Shropshire and Staffordshire | 3 | 2 | 2 | 2 | 2 | 2 | 3 | 2 | 3 | 3 | 3 | 3 | 30 |
| 21 | Nottinghamshire and Derbyshire | 2 | 3 | 2 | 3 | 3 | 2 | 3 | 4 | 4 | 3 | 5 | 4 | 38 |
| 22 | Cheshire | 1 | 1 | 1 | 2 | 1 | 2 | 2 | 3 | 1 | 2 | 2 | 2 | 20 |
| 23 | Merseyside | 2 | 2 | 2 | 1 | 2 | 1 | 2 | 3 | 3 | 2 | 3 | 2 | 25 |
| 24 | Greater Manchester | 3 | 3 | 3 | 3 | 4 | 4 | 6 | 3 | 5 | 5 | 5 | 5 | 49 |
| 25 | Lancashire and Cumbria | 3 | 2 | 3 | 3 | 2 | 3 | 4 | 3 | 4 | 4 | 3 | 3 | 37 |
| 26 | South Yorkshire | 2 | 1 | 2 | 1 | 1 | 2 | 3 | 2 | 2 | 2 | 2 | 3 | 23 |
| 27 | West Yorkshire | 2 | 3 | 4 | 3 | 4 | 2 | 6 | 3 | 3 | 3 | 4 | 4 | 41 |
| 28 | North Yorkshire and Humberside | 3 | 2 | 2 | 3 | 1 | 2 | 2 | 3 | 4 | 5 | 3 | 2 | 32 |
| 29 | Cleveland, County Durham and Northumberland | 2 | 2 | 2 | 1 | 3 | 2 | 2 | 3 | 3 | 1 | 2 | 5 | 28 |
| 30 | Tyne and Wear | 1 | 2 | 0 | 2 | 2 | 1 | 1 | 3 | 2 | 3 | 2 | 1 | 20 |
| Total | 70 | 64 | 69 | 67 | 70 | 67 | 99 | 98 | 94 | 98 | 95 | 98 | 989 |