Experiment Report for the Eratosthenes Project on http://youth.net/ School Name: coal ridge School Location: new castle, colorado Email Address: cyates_at_garfieldre2.org Experimenter: BF Changs Latitude 39D 33M 15 north Longitude: 107D 36M 355 west Distance to Equator: 4,395 Measured shadow angle in degrees: 37.73363286 Calculated Earth circumference: 41930.76256 Comments:Received on Thu Sep 29 2011 - 08:26:12 PDT