FIGURE 1 Logs Showing the Main Variables: January 1991–December 2002,,,,,,
Dates,Single-trip Metro (SMT),10-trip Metro (10MT),Single-rip bus (SBT),10-trip bus (10BT),Travel card (TC),Junior travel card (JTC)
1991-January,14.8,16.6,15.0,16.6,11.9,11.6
1991-February,14.7,16.6,14.7,16.5,12.0,11.7
1991-March,14.7,16.6,14.7,16.5,12.0,11.7
1991-April,14.8,16.7,14.8,16.6,12.0,11.7
1991-May,14.7,16.6,14.8,16.6,12.0,11.7
1991-June,14.7,16.6,14.9,16.6,11.9,11.6
1991-July,14.6,16.5,14.8,16.5,11.7,10.7
1991-August,14.2,16.0,14.5,16.0,11.1,10.0
1991-September,14.6,16.6,14.9,16.6,11.7,10.8
1991-October,14.7,16.8,14.9,16.7,12.0,11.6
1991-November,14.6,16.6,14.7,16.6,12.1,11.8
1991-December,14.6,16.6,14.8,16.5,12.0,11.7
1992-January,14.5,16.7,14.7,16.6,12.0,11.7
1992-February,14.5,16.7,12.9,14.4,11.9,11.6
1992-March,14.6,16.8,14.3,16.0,11.9,11.6
1992-April,14.4,16.5,14.5,16.2,12.1,11.8
1992-May,14.4,16.6,14.7,16.4,12.0,11.7
1992-June,14.5,16.6,14.7,16.6,11.9,11.5
1992-July,14.4,16.5,14.7,16.5,11.8,10.7
1992-August,14.0,15.9,14.4,15.9,11.1,10.0
1992-September,14.4,16.6,14.7,16.6,11.7,10.7
1992-October,14.5,16.7,14.7,16.6,12.0,11.6
1992-November,14.3,16.6,14.6,16.5,12.1,11.7
1992-December,14.4,16.6,14.7,16.5,12.0,11.7
1993-January,14.3,16.6,14.7,16.5,12.0,11.6
1993-February,14.2,16.5,14.5,16.4,12.1,11.7
1993-March,14.3,16.6,14.6,16.5,12.1,11.8
1993-April,14.2,16.5,14.6,16.4,12.0,11.6
1993-May,14.3,16.5,14.7,16.5,12.1,11.7
1993-June,14.4,16.5,14.7,16.6,12.0,11.6
1993-July,14.3,16.4,14.7,16.4,11.8,10.5
1993-August,13.9,15.9,14.4,15.9,11.1,9.8
1993-September,14.3,16.5,14.7,16.6,11.8,10.7
1993-October,14.3,16.6,14.7,16.5,12.1,11.5
1993-November,14.3,16.5,14.6,16.5,12.1,11.7
1993-December,14.4,16.5,14.7,16.5,12.1,11.6
1994-January,14.3,16.5,14.7,16.4,12.1,11.6
1994-February,14.2,16.4,14.5,16.4,12.1,11.7
1994-March,14.3,16.5,14.6,16.5,12.2,11.7
1994-April,14.3,16.5,14.6,16.4,12.2,11.7
1994-May,14.4,16.5,14.7,16.5,12.2,11.7
1994-June,14.4,16.4,14.7,16.5,12.1,11.5
1994-July,14.3,16.3,14.7,16.3,11.9,10.4
1994-August,14.0,15.9,14.4,15.9,11.2,9.7
1994-September,14.4,16.5,14.7,16.5,11.9,10.6
1994-October,14.4,16.5,14.7,16.5,12.2,11.5
1994-November,14.4,16.5,14.6,16.4,12.3,11.7
1994-December,14.5,16.5,14.7,16.4,12.2,11.6
1995-January,14.4,16.5,14.7,16.4,12.2,11.6
1995-February,14.3,16.4,14.6,16.4,12.2,11.7
1995-March,14.4,16.5,14.7,16.4,12.3,11.7
1995-April,14.4,16.3,14.6,16.3,12.2,11.6
1995-May,14.5,16.4,14.7,16.4,12.2,11.7
1995-June,14.5,16.5,14.8,16.4,12.1,11.5
1995-July,14.5,16.4,14.7,16.3,11.9,10.4
1995-August,14.1,15.9,14.5,15.9,11.3,9.7
1995-September,14.5,16.5,14.8,16.4,11.9,10.6
1995-October,14.5,16.5,14.7,16.4,12.2,11.5
1995-November,14.4,16.4,14.6,16.3,12.3,11.7
1995-December,14.5,16.4,14.7,16.3,12.2,11.6
1996-January,14.4,16.5,14.7,16.4,12.2,11.6
1996-February,14.4,16.4,14.6,16.4,12.3,11.6
1996-March,14.4,16.4,14.6,16.4,12.3,11.7
1996-April,14.4,16.4,14.6,16.3,12.2,11.6
1996-May,14.5,16.4,14.7,16.3,12.2,11.6
1996-June,14.4,16.4,14.7,16.4,12.2,11.5
1996-July,14.5,16.3,14.7,16.3,12.0,10.3
1996-August,14.1,15.9,14.4,15.8,11.4,9.6
1996-September,14.5,16.4,14.7,16.4,12.0,10.7
1996-October,14.5,16.5,14.7,16.5,12.3,11.5
1996-November,14.4,16.4,14.6,16.3,12.3,11.6
1996-December,14.5,16.4,14.7,16.3,12.3,11.6
1997-January,14.4,16.5,14.7,16.3,12.3,11.6
1997-February,14.3,16.4,14.6,16.3,12.3,11.6
1997-March,14.4,16.3,14.6,16.3,12.3,11.6
1997-April,14.4,16.4,14.7,16.4,12.3,11.6
1997-May,14.4,16.4,14.7,16.3,12.3,11.6
1997-June,14.5,16.4,14.7,16.4,12.2,11.4
1997-July,14.5,16.4,14.7,16.3,12.0,10.3
1997-August,14.2,15.9,14.5,15.8,11.4,9.7
1997-September,14.5,16.4,14.8,16.4,12.1,10.7
1997-October,14.5,16.5,14.7,16.4,12.3,11.5
1997-November,14.5,16.4,14.6,16.3,12.4,11.6
1997-December,14.6,16.5,14.8,16.3,12.3,11.5
1998-January,14.3,16.5,14.6,16.3,12.3,11.5
1998-February,14.2,16.4,14.3,16.3,12.3,11.5
1998-March,14.3,16.4,14.4,16.3,12.4,11.6
1998-April,14.2,16.4,14.4,16.3,12.3,11.5
1998-May,14.3,16.4,14.4,16.3,12.3,11.6
1998-June,14.3,16.5,14.5,16.4,12.3,11.4
1998-July,14.3,16.4,14.5,16.3,12.1,10.2
1998-August,14.1,16.0,14.2,15.8,11.5,9.7
1998-September,14.4,16.5,14.5,16.4,12.1,10.6
1998-October,14.4,16.5,14.5,16.3,12.4,11.4
1998-November,14.3,16.5,14.4,16.2,12.4,11.5
1998-December,14.5,16.6,14.4,16.3,12.4,11.4
1999-January,14.2,16.5,14.5,16.2,12.3,11.4
1999-February,14.2,16.5,14.3,16.2,12.4,11.5
1999-March,14.3,16.5,14.4,16.2,12.4,11.5
1999-April,14.3,16.5,14.4,16.2,12.4,11.5
1999-May,14.4,16.5,14.4,16.3,12.4,11.5
1999-June,14.4,16.6,14.5,16.3,12.3,11.3
1999-July,14.4,16.5,14.4,16.2,12.1,10.3
1999-August,14.2,16.1,14.2,15.8,11.6,9.7
1999-September,14.4,16.6,14.5,16.3,12.1,10.6
1999-October,14.5,16.6,14.4,16.2,12.4,11.4
1999-November,14.4,16.6,14.4,16.2,12.5,11.5
1999-December,14.6,16.6,14.5,16.2,12.4,11.4
2000-January,14.3,16.6,14.4,16.2,12.4,11.3
2000-February,14.4,16.6,14.3,16.2,12.4,11.4
2000-March,14.5,16.7,14.5,16.3,12.5,11.5
2000-April,14.4,16.5,14.3,16.1,12.4,11.4
2000-May,14.5,16.6,14.5,16.2,12.4,11.4
2000-June,14.5,16.6,14.5,16.3,12.4,11.3
2000-July,14.5,16.5,14.5,16.1,12.2,10.3
2000-August,14.3,16.1,14.3,15.8,11.7,9.7
2000-September,14.5,16.6,14.5,16.2,12.3,10.6
2000-October,14.6,16.7,14.5,16.2,12.5,11.3
2000-November,14.5,16.7,14.4,16.1,12.5,11.4
2000-December,14.7,16.6,14.5,16.1,12.5,11.3
2001-January,14.5,16.7,14.5,16.2,12.5,11.3
2001-February,14.5,16.6,14.3,16.1,12.5,11.4
2001-March,14.5,16.7,14.4,16.2,12.5,11.4
2001-April,14.5,16.5,14.4,16.1,12.5,11.3
2001-May,14.5,16.6,14.4,16.2,12.5,11.4
2001-June,14.6,16.6,14.5,16.2,12.5,11.2
2001-July,14.6,16.5,14.5,16.1,12.3,10.3
2001-August,14.3,16.2,14.3,15.8,11.8,9.8
2001-September,14.5,16.6,14.5,16.2,12.3,10.6
2001-October,14.6,16.7,14.5,16.2,12.5,11.3
2001-November,14.5,16.6,14.4,16.1,12.6,11.4
2001-December,14.7,16.6,14.4,16.1,12.5,11.3
2002-January,14.5,16.7,14.2,16.2,12.5,11.3
2002-February,14.4,16.6,14.1,16.1,12.5,11.3
2002-March,14.4,16.6,14.2,16.1,12.6,11.4
2002-April,14.4,16.7,14.2,16.2,12.6,11.4
2002-May,14.5,16.7,14.3,16.1,12.5,11.4
2002-June,14.5,16.6,14.3,16.1,12.5,11.2
2002-July,14.5,16.6,14.4,16.1,12.4,10.2
2002-August,14.3,16.2,14.2,15.8,11.9,9.8
2002-September,14.5,16.6,14.4,16.2,12.4,10.6
2002-October,14.6,16.8,14.3,16.2,12.6,11.3
2002-November,14.5,16.7,14.2,16.1,12.6,11.4
2002-December,14.6,16.8,14.3,16.2,12.6,11.3