PEOPLES GAS SYSTEM
GAS OPERATING STATISTICS (Unaudited)

                       
  Operating Revenues*           Therms*        
Three Months Ended June 30,         Percent           Percent
  2002   2001   Change   2002   2001   Change
                       
By Customer Segment:                      
Residential $ 14,866   $ 17,780   (16.4)   10,183   10,994   (7.4)
Commercial 28,633   40,224   (28.8)   76,437   72,321   5.7
Industrial 3,156   2,888   9.3   64,521   63,066   2.3
Off System Sales 20,684   8,714   --   52,529   19,022   --
Power generation 2,992   2,829   5.8   136,897   108,365   26.3
Other revenues 6,972   9,839   (29.1)   -   -   --

  $ 77,303   $ 82,274   (6.0)   340,567   273,768   24.4

                       
By Sales Type:                      
System supply $ 51,834   $ 58,050   (10.7)   84,159   61,934   35.9
Transportation 18,497   14,385   28.6   256,408   211,834   21.0
Other revenues 6,972   9,839   (29.1)   --   --   --

  $ 77,303   $ 82,274   (6.0)   340,567   273,768   24.4

                       
Average customers 276,698   266,171   4.0   --   --   --

                       
                       
                       
  Operating Revenues*           Therms*        
Six Months Ended June 30,         Percent           Percent
  2001   2000   Change   2001   2000   Change
                       
By Customer Segment:                      
Residential $ 40,685   $ 59,580   (31.7)   35,448   38,477   (7.9)
Commercial 64,334   107,703   (40.3)   172,362   163,131   5.7
Industrial 6,510   6,827   (4.6)   131,910   125,085   5.5
Off System Sales 31,075   13,103   --   85,887   25,641   --
Power generation 5,865   5,714   2.6   253,070   186,393   35.8
Other revenues 14,288   23,484   (39.2)   --       --

  $ 162,757   $ 216,411   (24.8)   678,677   538,727   26.0

                       
By Sales Type:                      
System supply $ 109,684   $ 163,094   (32.7)   175,804   143,960   22.1
Transportation 38,785   29,833   30.0   502,873   394,767   27.4
Other revenues 14,288   23,484   (39.2)   --   --   --

  $ 162,757   $ 216,411   (24.8)   678,677   538,727   26.0

                       
Average customers 276,339   266,227   3.8   --   --   --

                       
                       
                       
  Operating Revenues*           Therms*        
Twelve Months Ended June 30,         Percent           Percent
  2001   2000   Change   2001   2000   Change
                       
By Customer Segment:                      
Residential $ 69,327   $ 93,827   (26.1)   55,815   62,385   (10.5)
Commercial 120,216   182,392   (34.1)   318,147   303,409   4.9
Industrial 12,170   12,606   (3.5)   247,643   251,107   (1.4)
Off System Sales 56,190   31,505   78.4   165,789   61,873   --
Power generation 11,452   10,939   4.7   470,217   393,288   19.6
Other revenues 29,874   41,538   (28.1)   --       --

  $ 299,229   $ 372,807   (19.7)   1,257,611   1,072,062   17.3

                       
By Sales Type:                      
System supply $ 197,556   $ 277,228   (28.7)   324,025   281,295   15.2
Transportation 71,799   54,041   32.9   933,586   790,767   18.1
Other revenues 29,874   41,538   (28.1)   --   --   --

  $ 299,229   $ 372,807   (19.7)   1,257,611   1,072,062   17.3

                       
Average customers 271,647   261,533   3.9   --   --   --

                       
* in thousands