There's definitely some math error in there somehow.  If you look at your Shares Per Minute @ 1.75, then unless your rig went blank for 20 minutes you are averaging out 0.66 seconds per solution.  Also, you'll notice that your solution time increased on the second share that occurred 4 seconds after the previous one, which makes no sense.
So my guess is that there's something that's causing a misreporting of the solution time, but you are still running at a good poolside hashrate.