Looks like he went hang gliding, expecting an updraft and the winds pushed him down more than expected. Not down into the neon green zone, but only into the tree green BG level zone. You did a good job, keeping his BG levels in the green zone, with more food at +5 and another test at +6. Greens are where you want to see his BG numbers.
AND THEN after those lows, Herc's bounced sky high, into the red BG zone again. Unfortunately, Hercules is going to bounce until he doesn't anymore. His body is still having a hard time adjusting to the low BG levels.
Remember, red is bouncing, black is bouncing.
Did Hercules have a good appetite today, this morning? Eating all of his food?
Would you take a close look at your syringes, and see if the dosing lines on the insulin barrel line up in the same spot for most of this recent batch of syringes you are using. Simply something else to confirm.