Bill
I note that at 1gpm(3.785lpm) the PSID of 0.57(0.4mH2O) is about double your value*(eyeballed at 0.2mH2O).
This discrepancy ,repeated in the subsequent article**, makes correlation of the C/W data somewhat difficult.
Any info/thoughts on the anomaly.
*
http://thermal-management-testing.com/slitedge.htm
**
http://www.overclockers.com/articles873/