Is Juror # 10's comments to the jury not part of the deliberative process but part of his own "deliberative process"?

Instead, the comments attributed to Juror # 10 pertain, as the state court of appeal reasonably concluded, to his mental processes and subjective reasoning. His statements are appropriately read as part and parcel of his "deliberative process." And the deliberative process lies outside the bounds of 606(b). See Tarango v. McDaniel, 837 F.3d 936, 947 (9th Cir. 2016) ("[C]ourts universally prohibit jurors from impeaching their own verdicts through evidence of their internal deliberative process.").