Table 1

Dates used in study for March 1997 through June 1998 and 2001.

1998

January 22

January 27

February 3

February 4

February 5

February 18

February 23

March 18

March 19

March 31

April 3

April 16

May 22

June 14

June 21

June 22

June 27

June 28

June 29

1997

March 1

September 9

September 23

October 26

November 13

November 21

December 9

December 10

2001

July 28

August 25

September 7

September 8

Table 2

Cities used in the data for March 1997 through June 1998, and 2001.

Charleston, West Virginia CRW

Cincinnati, Ohio CVG

Columbus, Ohio CMH

Indianapolis, Indiana IND

Nashville, Tennessee BNA

Pittsburgh, Pennsylvania PIT