There is a gap between 1.90 and 2.00 that was never filled. you might see it fill that today. If it does and it doesn't drop below 1.90, where there seems to be a lot of support, we should still be good.
http://stockcharts.com/c-sc/sc?s=TGC&p=D&yr=0&mn=1&dy=0&i=t15050131268&r=7517You can see it between the 23rd and 24th. That should fill and then we should be on the up and up again.
There is no gap there, just some crooked Specialist trying to shake some shares.