Yesterday was a really good day of mining for you. Congrats.
But, you really must provide more data points to be able to average it.
Also, since you said that some days the pool doesn't find a block, it seems that the more correct estimate would be 0 to 7.9 XMR per day.
That averages to 3.95 XMR per day, roughly what I would expect for 3.5khash/sec total hashing power.
Yeah good point. Most days we get a block at least one anyway. But about once every 10 days or so we will have a dry spell and no blocks. Didn't put all the math together as I'm sitting on lunch break and didn't have time to do a daily average calculation. I will say Monerohash.com has been solid and the operator which is osensei is on point. Code patches and updates mostly applied same day issues are reported by dev's and others.