OK, you will actually notice that most all payouts are MORE than what shows on your web page.
The reason is that you mine to both an account that uses the address 13HPyx1B67C9KTrbHTEeJBYCVE2bhTnBnE and direct to the address 13HPyx1B67C9KTrbHTEeJBYCVE2bhTnBnE

The payout in your wallet combines the two - since it would be silly for me to send a transaction with 2 separate amounts to the same address - my script combines them to a single line in the payout.

Here's the actual payments generated as "Block Account BTC Address":
346045 13HPyx1B67C9KTrbHTEeJBYCVE2bhTnBnE 0.00001958   13HPyx1B67C9KTrbHTEeJBYCVE2bhTnBnE

346049 13HPyx1B67C9KTrbHTEeJBYCVE2bhTnBnE 0.00021239   13HPyx1B67C9KTrbHTEeJBYCVE2bhTnBnE

346100 13HPyx1B67C9KTrbHTEeJBYCVE2bhTnBnE 0.00218105   13HPyx1B67C9KTrbHTEeJBYCVE2bhTnBnE

346176 13HPyx1B67C9KTrbHTEeJBYCVE2bhTnBnE 0.00485159   13HPyx1B67C9KTrbHTEeJBYCVE2bhTnBnE
346176 chinesebob 0.00022625   13HPyx1B67C9KTrbHTEeJBYCVE2bhTnBnE
This = 0.00485159 + 0.00022625 = 0.00507784

346251 13HPyx1B67C9KTrbHTEeJBYCVE2bhTnBnE 0.00487151   13HPyx1B67C9KTrbHTEeJBYCVE2bhTnBnE
346251 chinesebob 0.00402624   13HPyx1B67C9KTrbHTEeJBYCVE2bhTnBnE
This = 0.00487151 + 0.00402624 = 0.00889775

346279 13HPyx1B67C9KTrbHTEeJBYCVE2bhTnBnE 0.00493528   13HPyx1B67C9KTrbHTEeJBYCVE2bhTnBnE
346279 chinesebob 0.00565353   13HPyx1B67C9KTrbHTEeJBYCVE2bhTnBnE
This = 0.00493528 + 0.00565353 = 0.01058881

346373 13HPyx1B67C9KTrbHTEeJBYCVE2bhTnBnE 0.00488057   13HPyx1B67C9KTrbHTEeJBYCVE2bhTnBnE
346373 chinesebob 0.00882940   13HPyx1B67C9KTrbHTEeJBYCVE2bhTnBnE
This = 0.00488057 + 0.00882940 = 0.01370997

The first one, 346045, never went out since it's below 10,000 satoshi (as I stated before ... one day ... in the future ... I'll get around to paying the dust)

Each of the rest will match your wallet if you add them together per block and the ones labelled "chinesebob" will match the web page

https://www.blocktrail.com/BTC/address/13HPyx1B67C9KTrbHTEeJBYCVE2bhTnBnE/transactions
Look for the transactions from the pool.