[Table] header: Station | Year opened | Metropolitan borough [c ] | Zone | Servedby Route maps:- [ dead link ] [ dead link ] | Station users 2006–07 | Station users 2007–08 row 1 : Acocks Green | 1852 | Birmingham | 3 | Chiltern Railways London Midland | 160100 | 161400
row 2 : Adderley Park | 1860 | Birmingham | 2 | London Midland | 19500 | 20400
row 3 : Aston | 1854 | Birmingham | 2 | London Midland | 167700 | 206300
row 4 : Berkswell | 1884 | Solihull | 5 | London Midland | 112000 | 114100
row 5 : Bescot Stadium | 1847 | Sandwell | 4 | London Midland | 55000 | 48200
row 6 : Birmingham Moor Street | 1909 | Birmingham | 1 | Chiltern Railways London Midland | 2680800 | 687400
row 7 : Birmingham Snow Hill | 1852 [d ] | Birmingham | 1 | Chiltern Railways London Midland Midland Metro | 1939000 | 2407300
row 8 : Blake Street | 1884 | Birmingham | 5 | London Midland | 175900 | 184000
row 9 : Bloxwich | 1989 | Walsall | 5 | London Midland | 21100 | 24000
row 10 : Bloxwich North | 1990 | Walsall | 5 | London Midland | 23800 | 26600
row 11 : Bordesley | 1855 | Birmingham | 2 | London Midland | 3700 | 4000
row 12 : Bournville | 1876 | Birmingham | 3 | London Midland | 405900 | 466900
row 13 : Butlers Lane | 1957 | Birmingham | 5 | London Midland | 96000 | 103000
row 14 : Canley | 1940 | Coventry | 5 | London Midland | 77900 | 90000
row 15 : Chester Road | 1863 | Birmingham | 3 | London Midland | 266700 | 296200
row 16 : Coseley | 1852 [e ] | Dudley | 5 | London Midland | 117200 | 126600
row 17 : Coventry | 1838 | Coventry | 5 | CrossCountry London Midland Virgin Trains | 2874900 | 3039500
row 18 : Cradley Heath | 1863 | Sandwell | 5 | Chiltern Railways London Midland | 242500 | 288300
row 19 : Dorridge | 1852 | Solihull | 5 | Chiltern Railways London Midland | 300800 | 304500
row 20 : Duddeston | 1837 | Birmingham | 2 | London Midland | 55700 | 59900
row 21 : Dudley Port | 1852 [f ] | Sandwell | 4 | London Midland | 144300 | 155200
row 22 : Earlswood [a ] | 1908 | Solihull | 5 | London Midland | 38400 | 32400
row 23 : Erdington | 1862 | Birmingham | 3 | London Midland | 299100 | 336000
row 24 : Five Ways | 1885 [g ] | Birmingham | 1 | London Midland | 514400 | 563900
row 25 : Four Oaks | 1884 | Birmingham | 5 | London Midland | 251000 | 276600
row 26 : Gravelly Hill | 1862 | Birmingham | 2 | London Midland | 199900 | 231400
row 27 : Hall Green | 1908 | Birmingham | 3 | London Midland | 143500 | 139400
row 28 : Hampton-in-Arden | 1837 [h ] | Solihull | 5 | London Midland | 54900 | 57300
row 29 : Hamstead | 1862 | Birmingham | 3 | London Midland | 67100 | 69500
row 30 : Jewellery Quarter | 1995 | Birmingham | 1 | Chiltern Railways London Midland Midland Metro | 108700 | 116800
row 31 : Kings Norton | 1849 | Birmingham | 3 | London Midland | 447500 | 481400
row 32 : Langley Green | 1885 | Sandwell | 3 | Chiltern Railways London Midland | 57900 | 60900
row 33 : Lea Hall | 1939 | Birmingham | 3 | London Midland | 146800 | 141200
row 34 : Longbridge | 1978 [i ] | Birmingham | 4 | London Midland | 342800 | 373300
row 35 : Lye | 1863 | Dudley | 5 | Chiltern Railways London Midland | 40400 | 46400
row 36 : Marston Green | 1844 | Solihull | 4 | London Midland | 183000 | 182200
row 37 : Northfield | 1870 | Birmingham | 4 | London Midland | 305800 | 333100
row 38 : Old Hill | 1866 | Sandwell | 4 | Chiltern Railways London Midland | 79000 | 83100
row 39 : Olton | 1869 | Solihull | 4 | Chiltern Railways London Midland | 140200 | 143100
row 40 : Perry Barr | 1837 | Birmingham | 2 | London Midland | 164100 | 172600
row 41 : Rowley Regis | 1867 | Sandwell | 3 | Chiltern Railways London Midland | 295900 | 325000
row 42 : Sandwell and Dudley | 1852 | Sandwell | 4 | London Midland Virgin Trains | 280000 | 314600
row 43 : Selly Oak | 1876 | Birmingham | 2 | London Midland | 1023500 | 1113300
row 44 : Shirley | 1908 | Solihull | 4 | London Midland | 172700 | 164000
row 45 : Small Heath | 1863 | Birmingham | 2 | Chiltern Railways London Midland | 37200 | 37700
row 46 : Smethwick Rolfe Street | 1852 | Sandwell | 2 | London Midland | 113600 | 107100
row 47 : Solihull | 1852 | Solihull | 4 | Chiltern Railways London Midland | 651800 | 662700
row 48 : Spring Road | 1908 | Birmingham | 3 | London Midland | 82800 | 77000
row 49 : Stechford | 1844 | Birmingham | 3 | London Midland | 109200 | 119800
row 50 : Stourbridge Junction | 1852 | Dudley | 5 | Chiltern Railways London Midland | 444200 | 499600
row 51 : Stourbridge Town | 1879 [j ] | Dudley | 5 | London Midland | 258700 | 278800
row 52 : Sutton Coldfield | 1862 [k ] | Birmingham | 4 | London Midland | 578100 | 634300
row 53 : Tame Bridge Parkway | 1990 | Sandwell | 4 | London Midland Wrexham & Shrop | 177800 | 189700
row 54 : The Hawthorns | 1931 [l ] | Sandwell | 2 | Chiltern Railways London Midland Midland Metro | 145700 | 157200
row 55 : Tile Hill | 1864 | Coventry | 5 | London Midland | 130700 | 142100
row 56 : Tipton | 1852 | Sandwell | 5 | London Midland | 124600 | 126800
row 57 : Tyseley | 1906 | Birmingham | 2 | Chiltern Railways London Midland | 63200 | 66500
row 58 : University | 1978 | Birmingham | 2 | CrossCountry London Midland | 1190800 | 1250900
row 59 : Walsall | 1849 [m ] | Walsall | 4 | London Midland | 583300 | 587000
row 60 : Whitlocks End | 1936 | Solihull | 4 | London Midland | 23500 | 26600
row 61 : Widney Manor | 1899 | Solihull | 4 | Chiltern Railways London Midland | 119500 | 116900
row 62 : Witton | 1876 | Birmingham | 2 | London Midland | 77400 | 99800
row 63 : Wylde Green | 1862 | Birmingham | 4 | London Midland | 223900 | 243800
row 64 : Wythall [a ] | 1908 | Bromsgrove | 5 | London Midland | 31400 | 30300 [/Table] Answer this question based on the above table: What's the biggest zone?

Answer: 5.0