Participants Numbers 

eScience Workshop - 23 
Optical Networking Workshop - 20  
P2P & GRID Session - 19  
Natural Resource Workshop (Earth System Session) - 43  
Natural Resource Workshop (Wireless Sensor Session) - 51 
Natural Resource Workshop (Earth Observation Session) - 38  
Middleware Session - 16   
Logistical Networking Session - 15  
HDTV Video Session - 20  
Security Session - 15
Measurement Session - 14
Satellite Session - 13
Multimedia Session - 12
APAN/Internet2 VoIP Summit - 13
K20 Session - 13
IPv6 Session - 24
Grid Session - 14
Engineering Workshop - 27