This will produce a list of the first 1000 "IV frames". "Normally" the first mon you capture will have it's IVs as frames 1-6 in that order. "Normally" the first egg will have it's "base egg IVs" as 8-13 in that order. However, there are some exceptions like your roamer which has it's IVs generated as frames 2,3,4,7,5,6 in that order. And there is the fact that you can pretty much hit whatever frames you want as the IVs you get by the different means that we know of advancing your frame.