I have 2.18% Neanderthal ancestry.

qpf4 run
alpha std. err Z (null=0)
result: Altai_Neanderthal.DG Chimp.REF Aryamsha Yoruba : Altai_Neanderthal.DG Chimp.REF Vindija_Neanderthal.DG Yoruba 0.021852 0.003315 6.593 551456
## end of run

Scottish have around 2.15% Neanderthal
alpha std. err Z (null=0)
result: Altai_Neanderthal.DG Chimp.REF Scottish Yoruba : Altai_Neanderthal.DG Chimp.REF Vindija_Neanderthal.DG Yoruba 0.021567 0.002853 7.560 551302
## end of run

Tamils are 1.92% Neanderthal
alpha std. err Z (null=0)
result: Altai_Neanderthal.DG Chimp.REF GBR..SG Yoruba : Altai_Neanderthal.DG Chimp.REF Vindija_Neanderthal.DG Yoruba 0.019256 0.002597 7.415 551027
## end of run

R1a-Z93 (R1a1a1b2)