"Nailing" stamps from an online scan is subject to a margin of error, especially regarding varieties related to colour. My experience with trying to purchase colour varieties from an online source have had very mixed results and too many surprises regarding the colour now in hand. With this caveat, I would suggest you have:
Nova Scotia 8a (the paper appears slightly toward yellowish) and Nova Scotia 11
New Brunswick 7 (the colour varieties need to be judged in hand with good natural light)
Prince Edward Island 5 (barring your measurement yielding the rare mixed perforation variety, which again is almost impossible to judge from an online scan not at exact 1:1 size)
I'm a Canadian collector, but not an expert; I hope these opinions make sense to you.
I am going to get the jump on Tom and say that most of these stamps had the same size perforations on all edges. In rare cases some stamps there two different size perforations used on the same stamp (for example the vertical perforations are different from the horizontal perforations). That is what is referred to as a mixed perforation
It was easy for smauggie to get a jump on my reply today; my apartment building was without electricity most of the day because of construction activity. Now that it is back on and I see your question, I was referring to the Prince Edward Island 2 cent stamp, which generally has perforations measuring 11 1/2 or 12, but Unitrade 5g is a variety with perforations of 11 x 11 1/2 or 12 (11 top/bottom, other on either side). I speak not from experience of having it in my album, just reading from the Unitrade catalogue.
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