Simplify the following text for a Grade 5 native English-speaking person.
Original: It was filmed in 2002 and 13 episodes aired weekly in the United States on CBS from February 13 - May 11 , 2003 .
Simplified: It was filmed in 2002 . There were thirteen episodes , one was shown each week on CBS from February 13 - May 11 , 2003 .