How to save some Chemical Vials

The Plasma Refinery needs needs a lot of Chemical Vials and Oil to produce Plasma. Chemical Vials where pretty useless for most units before the 4.0 patch, but now they're in great demand. The following spreadsheet can help to pick efficient jobs to save some Chemical Vials.
The numbers in the blue line show the number of Chemical Vials that are needed to produce 1 Plasma. Smaller numbers are better. As you can see, leveling up the Plasma Refinery does not automatically cause a better efficiency.
(The basis of this spreadsheet is from the BN wiki.)

Awesome spreadsheet hera! I was actually wondering about the effeciency ratios myself. Kinda dumb to decrease the value on longer jobs but at least we know now.