Thanks for this work Joshk! I'll also try to add your bulbs tests results in it today.
Dealing with missing info is a tricky subject. So far on the spreadsheet I choose the strategy of not altering the results (just highlighting the unfilled cells), if the info is missing it is missing. Therefore those bulbs with missing info are left with a disadvantage and can't be "fully compared".
Toward our goal to order bulb light quality I don't see a clear better scientific strategy... Except being sure to have all the data, of course!
In both cases, the Qfactor/CRI_grade are biased, one time for missing data, one time for assuming a supposed value.