Table 5.  Passenger TSI - Percentage Changes Due to:,,,,
Date,"Changes
in Source Data","Changes
in Seasonal Factors","Changes
in Weights/
Methodology",All Changes
Dec-06,-0.68,0.12,0.10,-0.46
Nov-06,-0.51,-0.05,0.09,-0.47
Oct-06,-0.63,0.22,0.09,-0.32
Sep-06,-0.64,0.10,0.06,-0.48
Aug-06,-0.59,0.18,0.05,-0.36
Jul-06,-0.84,0.47,0.06,-0.32
Jun-06,-0.30,-0.23,0.04,-0.48
May-06,-0.29,0.44,-0.01,0.14
Apr-06,-0.55,0.64,-0.02,0.07
Mar-06,0.54,-0.29,0.02,0.27
Feb-06,0.53,0.82,0.04,1.39
Jan-06,0.71,-0.19,0.14,0.66
Dec-05,-0.40,-0.07,-0.08,-0.54
Nov-05,-0.13,0.05,0.02,-0.05
Oct-05,-1.16,0.74,0.03,-0.39
Sep-05,-0.35,-0.05,0.03,-0.37
Aug-05,-0.24,0.83,0.02,0.61
Jul-05,-1.25,0.32,0.01,-0.92
Jun-05,-0.46,0.36,-0.01,-0.12
May-05,-0.49,-0.17,-0.06,-0.72
Apr-05,-0.53,-0.27,0.05,-0.75
Mar-05,-0.92,0.11,-0.01,-0.82
Feb-05,-0.87,2.41,0.04,1.56
Jan-05,-1.13,0.66,0.07,-0.40
January 2005-December 2006,,,,
Average,-0.47,0.30,0.03,-0.14
Minimum,-1.25,-0.29,-0.08,-0.92
  Date of Min,Jul-05,Mar-06,Dec-05,Jul-05
Maximum,0.71,2.41,0.14,1.56
  Date of Max,Jan-06,Feb-05,Jan-06,Feb-05
Prior Years:,,,,
January 2002-December 2004,,,,
Average,-0.15,0.13,0.15,0.12
Minimum,-0.74,-1.05,-0.04,-1.42
  Date of Min,Apr-02,Feb-04,Jan-02,Feb-04
Maximum,0.89,1.68,0.24,1.45
  Date of Max,Sep-02,Feb-03,Dec-02,Feb-03
January 1990-December 2001,,,,
Average,-0.13,0.14,0.18,0.19
Minimum,-1.17,-2.74,-0.35,-2.88
  Date of Min,Apr-00,Feb-96,Sep-01,Feb-96
Maximum,1.18,1.29,0.62,1.84
  Date of Max,Nov-00,Feb-90,Mar-91,Dec-01
Source: Bureau of Transportation Statistics,,,,