Miner running but need help to understand stuff

G'Day everyone,
I am looking for some help to understand if I am on the right track.
I have two miners each with a single GPU. Am mining eth.nanopool.org for just shy of two weeks.

Current Calculated Hashrate
34.0 Mh/s
Average Hashrate
for last 6 hours
36.8 Mh/s
Last Reported Hashrate
33.0 Mh/s
Balance
0.05590077 ETH

How can I find out how many ETH or fractions I have?
The balance that is displayed goes up and then falls back and I am not sure what that means.

Thanks