These are the cumulative rewards per worker (you have 5 workers) and the sum of this should appear under rewards summary (sum of paid/unpaid balance, but with these small rewards you have nothing paid). Since the numbers are so small, it means that whatever you use to mine has very little hashing power, maybe you are using a PC's CPU? Look at the speed on the left side of the same rows. Anything that is not at least some Mh/s is more or less useless. If you get zero you probably have your miner not configured properly.