Can someone please explain the difference"bestever" status CKPool?

[Gad!sQ]

an someone please explain the difference"bestever" and "bestshare on CKPool?

yesterday i'have reach 69.67G on best ever status...
now..i have reach 6.26G on best ever status...
{
 "hashrate1m": "6.27T",
 "hashrate5m": "6.13T",
 "hashrate1hr": "5.63T",
 "hashrate1d": "5.59T",
 "hashrate7d": "5.48T",
 "lastshare": 1767229429,
 "workers": 1,
 "shares": 6956928736,
 "bestshare": 6256354419.662716,
 "bestever": 6256354419,
 "authorised": 1761433036,
 "worker": [
  {
   "workername": "bc1q3u5r36z5v6f72w5v8rn473fj2kj4rjfxvrue9q",
   "hashrate1m": "6.27T",
   "hashrate5m": "6.13T",
   "hashrate1hr": "5.63T",
   "hashrate1d": "5.59T",
   "hashrate7d": "5.48T",
   "lastshare": 1767229429,
   "shares": 6956928736,
   "bestshare": 6256354419.662716,
   "bestever": 6256354419
  }
 ]
https://ibb.co.com/d0kJqHTB
any one can explain this..?
thank you

[philipma1957]

Please lock this and ask on the pool thread.

The answer is the pool reset it self when it hits a block.

[Gad!sQ]

ok..thank you