I placed a 1x1 angle from the swing low during the week of 02-06-17, @ 1.45360. Then I let the 45 degree angle intersect with the swing high during the week of 11-27-17, @ 1.74801, then squared it. The 1.67441 area has been holding up as support for almost six months. And the 1.71121 area is showing as resistance.