This is a little above my present pay-rate but tentatively i suspect that we are looking at an A-B-C X A-B-C. As chance will have it, being so close to ground level there is no possibility for another A-B-C (three in a row is the maximum). As always lows occur perpendicularly under the apex of a triangle, in this case the B wave of the second A-B-C. Here it is;
In this scenario the move from 70 cents to $2.10 early Dec. would be wave one (or a) up, then 2 or b back to 80 cents, now 3 or c to >$2.10 , probable around $3.