PEOPLES GAS SYSTEM
GAS OPERATING STATISTICS (Unaudited)

                       
  Operating Revenues*           Therms*        
Three Months Ended September 30,         Percent           Percent
  2001   2000   Change   2001   2000   Change
                       
By Customer Segment:                      
Residential $ 12,910   $ 12,477   3.5   8,290   8,024   3.3
Commercial 27,931   32,458   (13.9)   68,224   61,887   10.2
Industrial 2,788   2,614   6.7   54,533   59,243   (8.0)
Off System Sales 15,851   14,463   9.6   45,037   29,963   50.3
Power generation 3,070   2,562   19.8   131,435   126,398   4.0
Other revenues 8,032   7,421   8.2   -   -   --

  $ 70,582   $ 71,995   (2.0)   307,519   285,515   7.7

                       
By Sales Type:                      
System supply $ 46,802   $ 53,621   (12.7)   76,624   72,018   6.4
Transportation 15,748   10,953   43.8   230,895   213,497   8.1
Other revenues 8,032   7,421   8.2   --   --   --

  $ 70,582   $ 71,995   (2.0)   307,519   285,515   7.7

                       
Average customers 263,537   254,253   3.7   --   --   --

                       
                       
                       

  Operating Revenues*           Therms*        
Nine Months Ended September 30,         Percent           Percent
  2001   2000   Change   2001   2000   Change
                       
By Customer Segment:                      
Residential $ 72,490   $ 51,462   40.9   46,766   41,747   12.0
Commercial 135,634   103,600   30.9   231,355   213,686   8.3
Industrial 9,615   9,725   (1.1)   179,618   211,591   (15.1)
Off System Sales 28,954   34,823   (16.9)   70,678   89,507   (21.0)
Power generation 8,784   8,061   9.0   317,828   338,087   (6.0)
Other revenues 31,516   22,386   40.8   --       --

  $ 286,993   $ 230,057   24.7   846,245   894,618   (5.4)
                       
By Sales Type:                      
System supply $ 209,896   $ 172,261   21.8   220,584   255,285   (13.6)
Transportation 45,581   35,410   28.7   625,661   639,333   (2.1)
Other revenues 31,516   22,386   40.8   --   --   --

  $ 286,993   $ 230,057   24.7   846,245   894,618   (5.4)

                       
Average customers 265,330   255,155   4.0   --   --   --

                       
                       
                       

  Operating Revenues*           Therms*        
Twelve Months Ended September 30,         Percent           Percent
  2001   2000   Change   2001   2000   Change
                       
By Customer Segment:                      
Residential $ 94,261   $ 68,006   38.6   62,651   55,368   13.2
Commercial 177,866   135,259   31.5   309,745   285,291   8.6
Industrial 12,896   12,943   (0.4)   246,398   280,743   (12.2)
Off System Sales 32,892   40,010   (17.8)   76,947   107,994   (28.7)
Power generation 11,331   11,037   2.7   398,325   444,941   (10.5)
Other revenues 42,149   29,466   43.0   --       --

  $ 371,395   $ 296,721   25.2   1,094,066   1,174,337   (6.8)
                       
By Sales Type:                      
System supply $ 270,409   $ 219,923   23.0   285,900   329,774   (13.3)
Transportation 58,837   47,332   24.3   808,166   844,563   (4.3)
Other revenues 42,149   29,466   43.0   --   --   --

  $ 371,395   $ 296,721   25.2   1,094,066   1,174,337   (6.8)

                       
Average customers 263,854   253,701   4.0   --   --   --

                       
* in thousands