Hello everybody.
I add 1 PH to ckpool.

This is my share:
"hashrate1m": "1.06P",
 "hashrate5m": "1.08P",
 "hashrate1hr": "1.07P",
 "hashrate1d": "670T",
 "hashrate7d": "145T",
 "lastshare": 1547552260,
 "workers": 80,
 "shares": 22088767721,
 "bestshare": 15367375559.55668,
 "bestever": 15367375559,

Could anyone explain or give me information to read what is bestshare means? And is it good for 1 PH?
Thanks.