Coordinates of the E-V13 samples from the Sarmatian paper:
E-V13_MDH_444::MDH-444,0.119514,0.128972,0.029415,0.002261,0.007694,0.004183,0.00799,0.011769,0.005318,0.011481,-0.004384,-0.001798,-0.003271,0.004129,-0.013165,-0.018032,-0.019688,0,0.00905,-0.010005,-0.012104,0.003462,0.002588,0.003615,-0.007784
E-V13_MDH-462:MDH-462,0.12862,0.122879,0.041483,0.031008,0.022773,0.011435,0.00094,0.004384,0.002045,0.003827,0.002436,0.006145,-0.009514,0.000963,-0.006243,-0.008353,0.010431,0.009248,0.012067,0.003001,0.006364,-0.000371,-0.005176,0.000964,0
E-V13_MIJ-3:MIJ-3,0.106994,0.048745,0.025267,0.000323,0.004308,-0.006972,0.0094,-0.000692,-0.000818,0.007289,0.000325,-0.003147,-0.014123,-0.005918,-0.0038,-0.005038,-0.002999,-0.002914,0.013324,0.007379,-0.006613,-0.001484,-0.001725,0.00241,0.002515
E-V13_OFU-422:OFU-422,0.125205,0.141159,0.041483,0.023256,0.031698,0.011713,0.007285,0.004154,0.006749,0.003462,-0.006008,-0.001199,0.002973,0.004679,0.004479,0.005436,0,0.010008,0.002891,0.000625,0.009358,-0.008037,0.011462,-0.000964,-0.008263
E-V13_DZS-3

ZS-3,0.125205,0.118817,0.048649,0.035853,0.029236,0.016733,0.009635,0.006231,0.009408,0.006743,-0.004547,0.002548,0.001635,-0.000413,-0.014251,-0.003182,0.00691,-0.007981,0.000126,0.003752,-0.009608,0.001113,-0.003821,-0.002289,-0.009221
E-V13_DZS-5

ZS-5,0.132035,0.120848,0.041106,0.02261,0.022773,0.012271,-0.000235,0.000462,0.001432,0.007654,-0.002111,0.001499,-0.008028,-0.001376,0.004886,0.001458,-0.000913,0.0019,0.004902,0.006503,-0.000749,0.00136,0.002958,-0.002289,-0.001078
E-V13_TIV-17:TIV-17,0.114961,0.144205,0.035449,0,0.033237,-0.00502,0,-0.000231,0.010635,0.003462,-0.000325,0.000749,-0.01115,-0.007019,-0.008143,0.017104,0.023208,0.006334,0.010182,-0.001626,-0.006613,-0.001855,0.001602,0.003253,-0.005987
E-V13_CSO-502:CSO-502,0.120652,0.142174,0.027907,-0.011628,0.024004,0.001952,0.00423,-0.003461,0.006545,0.027153,0.006983,0.002098,-0.01115,-0.003991,-0.0076,0.007027,0.032205,-0.006841,-0.002263,-0.003377,-0.006364,-0.00272,-0.011709,0.02181,-0.000239
E-V13_Hungary_Transtisza_Roman_Sarmation:I20802,0.122929,0.135065,0.034695,0.014535,0.01908,-0.001673,-0.00188,0.000462,0.001636,0.010023,-0.005034,0.007643,-0.004906,-0.004679,-0.004614,-0.004375,-0.002086,0.002787,0.006411,-0.012006,-0.005865,0.004328,0.0053,-0.00253,-0.00467
Source post:
https://genarchivist.net/showthread.php?tid=648&pid=54442#pid54442
A big cluster appears to be Celtic to Celto-Dacian, actually a significant part of the E-V13 group. North Thracian/Dacian cline is clearly visible - dominates in Transtisza, one plots right with Thracian Hallstatt (CSO-502). A big outlier is MIJ-3, who has excess East Asian ancestry, unusually high levels even for Sarmatians. Interestingly, he also has the lowest WHG ancestral component, which further cements his complete outlier position in this group of E-V13 carrying Sarmatians.
Most notable, the E-V13 individuals have, compared to the total sample, much less Sarmatian shift, but clear trends towards Celtic-Pannonian and North Thracian primarily.
One sample, OFU-422, is dated to the Hunnic period, but he is not the big outlier.
Edit: Basically we deal with two clusters, one which is Celtic/Celto-Dacian/Celto-Dacian-Pannonian and one which is North Thracian, both have varying degrees of possible small to no Sarmatian admixture.
The North Thracian ones are all rather East of the Tisza, North of the Danube (TIV-17, I20802). But another North Thracian, more Thracian-Hallstatt like, with minimal to no admixture is CSO-502. Now the interesting part is:
Three out of 4 are East of the Tisza river, while the opposite pattern can be observed for the Celtic-Pannonian shifted ones, which are all are West Tisza river.
Therefore the trend is not as much North <-> South, but West <-> East, with the Tisza river (!) marking the border.
Only one of the North Thracian shifted individuals is from West of the Tisza - in the South, it is MDH-444. There is a marked decrease, for the averages of WHG ancestry, from West to East of the Tisza river.
The more North Thracian shifted E-V13 individuals are not accompanied by a lot of samples on the plot, but seem to form a minor group in the whole Sarmatian sample compared to more Celtic shifted individuals. There are a lot more in the total sample, but these are all decisively more Sarmatian shifted. I guess these scattered dots represent Sarmatian (male) : Dacian (female) mixtures, which also explains, why only the most North Thracian/Dacian shifted individuals are E-V13. Among those which are 50:50 or so, there is not a single one (presumably all Sarmatian lineages).
What this also shows, is that the Celtic-Pannonian population closer to the Danube, in the Sarmatian era, had received a strong E-V13/Carpatho-Balkan/Dacian input, just like expected for groups like the Scordisci. Autosomally they are rather on the Celtic-Pannonian side of things, but in total there is quite a number of E-V13 among them, compared to the total number of R-U152, which being present at about the same level.
One example of a likely Celtic branch being:
https://www.yfull.com/tree/R-Z49/
He is from Kunszentmiklós, South of Budapest.
Interestingly, the more Celtic-Pannonian individuals from the South, from the E-V13 domianted area, have barely any Celtic branches, instead, beside E-V13, they have rare branches like
https://www.yfull.com/tree/R-Z2106/ - at the site of Dormánd, pretty much in the North, close to the Tisza river, but still West of it (DZS-3 and DZS-5 are E-V13, and the Western Celtic-Pannonian shift is typical for the site, with the DZS-44 with Sarmatian R1a plotting close, just with more Sarmatian admixture compared to the E-V13 individuals. He might be Sarmatian-Dacian mixed in the making, while DZS-41 again from Dormánd is a pure Sarmatian.
The R-Z2106 (DZS-43) individual is fully with the E-V13 guys, therefore Celto-Dacian-Pannonian! This is quite remarkable, since it points to multiple lineages, not just E-V13, having arrived from the Daco-Thracian sphere and mixing into a still rather Celtic-Pannonian shifted population.
So we have here a mix of local Celto-Dacian/Celto-Pannonian-Dacian people on the one hand, with E-V13 (DZS-3, DZS-5) and other lineages like R-Z2106 (DZS-43), and incoming pure Sarmatians, like DZS-41, and mixed individuals, with a Sarmatian father and local mother, like DZS-44.
Note these are early period samples! So they are right from the time frame when Sarmatians began coming in! And the local population in this area, which is rather Celto-Dacian/Pannonian-Dacian in the wider sense, being dominated by E-V13, plus we got R-Z2106 from these locals.
On top of the cake, also note that the Celto-Dacian/Daco-Pannonian mix predominates in the areas the Romans "gave" to the Iazyges and which were mostly "Celtic"-influenced before - this is the map with all the E-V13 samples, their cluster and affiliation - special attention to the site of Dormánd, with the above described "mixing process" between locals (E-V13, R-Z2106) and incoming Sarmatians:
The trend between more Daco-Thracian East of Tisza vs. Celto-Dacian with Sarmatian admixture West of the Tisza river is in full accordance with the Roman writings and historical records, which tell us that the Iazyges were called in to form a buffer between the Roman provinces and the Dacians:
In their early relationship with
Rome, the Iazyges were used as a
buffer state between the Romans and the Dacians; this relationship later developed into one of overlord and
client state, with the Iazyges being nominally sovereign subjects of Rome. Throughout this relationship, the Iazyges carried out raids on Roman land, which often caused
punitive expeditions to be made against them.
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