A vacuum of 15 microns is 15 mtorr is 0.015 torr = 0.015 mmHg, which could easily pull safrole in the 70 degree range, probably even lower... I too doubt he's getting that good of a vacuum without a liquid nitrogen trap and new pump oil, but he's likely getting something close to 15 microns if his sassy is coming over at 70 degrees.