IMMIS^luft basis (license) 
The basis license is neccesary for all extensions

• IMMIS^luft or
• IMMIS^em
  

• emissions (IMMIS^em)
• Visum-Interface 
• MapInfo and ArcGIS, ArcInfo interface 
• IMMIS^map 
• IMMIS^arc 
• additional coupling constants for individual meterologies 

• IMMIS^luft(air) + IMMIS^em 
• IMMIS^luft(air) + Mobilev-Interface 
• IMMIS^luft(air) + IMMIS^map/ IMMIS^arc  
• IMMIS^em + IMMIS^net
• IMMIS^luft(air) + IMMIS^em + IMMIS^net (IMMIS^all)
• IMMIS^all + IMMIS^map/ IMMIS^arc