Layer Estimates:

Layer: Air Quality Diffusion Tubes (ID:0)
Count: 66
Extent:

XMin: 293182.05
YMin: 683431.9
XMax: 351667.35
YMax: 716947.2861
Spatial Reference: 27700 (27700)

Layer: Smoke Control Areas (ID:1)
Count: 14
Extent:

XMin: 307495.133728942
YMin: 682280.738766704
XMax: 329634.569021358
YMax: 704162.851307776
Spatial Reference: 27700 (27700)

Layer: Air Quality Management Areas (ID:2)
Count: 2
Extent:

XMin: 309819.650244643
YMin: 687683.685153287
XMax: 337997.079926535
YMax: 714734.020244431
Spatial Reference: 27700 (27700)