Share: the number of calculated results which your miners submit to the miner pool.
A: Share accepted.
R: Share rejected. The number of shares rejected because those shares don’t meet the requirement of servers.
The rejection rate: The proportion of the rejected shares number accounted for the total submitted number.
Tips: The rejection rate for BTC and LTC is floating around 0.3%, and 0.4 for ZEC, 3% for ETH/ETC.