Below is the graph for erect penile length according to this article
(i.e. the above article).
In such studies it is always important to note the exact measurement method. According to the study the
erect length was measured from the root (pubo-penile junction) of the penis to the tip of the glans (meatus) on the dorsal surface, where the pre-pubic fat pad was pushed to the bone
So the effective lengths are even smaller by at least about 0.5cm(=0.2inch) due to the fat pad (also taking into account that many men are overweight or obese their fat pad may be ≥1cm so their effective length smaller).
Based on the graphs one can make the following observations:
(i)10% of men have a bone-pressed erect length ≤11cm (=4.33inches)
(ii) 50% of men have a bone-pressed erect length ≤13.12cm (=5.16 inches)
(iii)90% of men have a bone-pressed erect length ≤15.2cm (=5.98 inches)
(iv)95% of men have a bone-pressed erect length ≤ 15.8cm (=6.22 inches)
(v)99% of men have a bone-pressed erect length≤ 17.25cm (=6.79 inches)
So in other words if you have a penis with bone-pressed length 6 inches (i.e. effective length 5.8 inches in case you are not overweight) you belong in the top 10%. If you have 6.22 inches (i.e. effective length of 6 inches) you belong in the top 5% and if you have 6.8 inches you belong in the top 1%. Also readings about 7inches or larger are impossible to be made from the graphs as they are all 100%). These results actually confirm what prossies say to all of us that we have big dicks. But these results like the claims of prossies are bullshit. The big question is. Were the sampled guys having their fullest erection during measurement (i.e. twitching)? Most probably not. Most probably they were just hard due to the clinical environment. It is not a coincidence that the sample of erected length measurements was 692 i.e. much smaller than the sample of stretched flaccid length measurements which was 14160. I do note that from the graph there is a difference of 0.3cm (=0.12 inch) between stretched flaccid and erect (perhaps due to the non-full erection). If someone can contact such a survey successfully are hot prossies right after giving you a blowjob. Then however they will subtract an inch or two to back their bullshit..