Given how tight you are the second half of that graph looks like permanent tilt?

In terms of the stats, you're cbet percentage is too high i think. I guess since you're tight that ur range is probably a bit stronger than mine might be, but still 75%? Especially as your WTSD is 19%! You must be bet/folding the flop far too often, or simply giving up whenever you are called without a hand (which must be quite a lot given ur cbetting habit). I'm gonna guess you're losing a LOT of monies in non-showdown pots, which isn't necessarily a leak in itself but might be indicative of what i've mentioned above.

HH's would be helpful!