Not all values may be correct, going by best guess as per pattern over multiple buildings. Will test values and update if incorrect. (Updated closer values for Level 5 and 6 as of 04/14/2013, much more editing needed)
The times for completion are generic. These are the times that it takes without any "Architecture" research for a speed increase.
Each level protects more and more resources (ex. Level 5 protects 500K each, Level 6 protects 600K each)