Ancient Siberian N-men tested

 I analyzed six Siberian ancient samples belonging to the N-haplogroup for the study "Ancient DNA reveals the prehistory of the Uralic and Yeniseian peoples" and collected location and age data from them.

I12488 - N1a1a1a1a Russia Fofonovo (Baikal) ? BCE)

I1961 - N1a1a1a1a Russia Ust Ilimsk (Irkutsk Oblast) 4239-4002 calBCE

I20305 - N1a1a1a1a (possibly N-CTS6967) Russia Krasnoyarsk Krai (Sharypovskiy District) 2288-2058 calBCE

I32545 N1a1a1a1a (possibly N1a1a1a1a2, N-Z1936, clade age 2600 BCE) Russia Rostovka (Omsk Oblast) 2021-1884 calBCE

N4a1 N1a1a1a1a Russia Kyordyughen (Sakha Republic) (possibly N1a1a1a1a4, N-M2118, ISOGG dating 2500 BCE) announced dating "Late Neolithic", but the haplogroup age reveals 3100 BCE for N1a1a1a1a

N4b2 N1a1a1a1a Russia Kyordyughen (Sakha Republic) (possibly N1a1a1a1a1a2a N-L1022, clade age 1900 BCE, seems to be a Baltic branch)

My test gives results with ISOGG classification, but I have added mutations according to Yfull or some other source. ISOGG gives a large number of mutations, which also appear in my test, but not included.

Unfortunately, all classifications are made according to modern populations, and ancient dead branches of the haplotree cannot be found this way. Because of this, most classifications end in the category N1a1a1a1a. You may have wondered why so many results end up in this category. This also leaves the sample history, datings by the y-tree and historical linkage between ancient samples incomplete. It is likely that ancient male lineages show more historical information over a wide area, and there is no way we can know which ancient specimens are more closely related based on classifications made based on living men if we have an unknown time period of 4,000 years from the ancient specimen to the present.

Please feel free to speculate.