If we treat the raw value of Power On Hours as two hexadecimal numbers, we get ...
0x09745D & 0x00000002 -> 2 hours + 10.3 minutes
(0x9745D milliseconds = 10.3 minutes)
Similarly for Head Flying Hours ...
0x2533B4 & 0x00000000 -> 0 hours + 40.6 mins
(0x2533B4 milliseconds = 40.6 minutes)
Please note that my interpretation of the POH attribute is based on experimentation, not on official Seagate sources. You can do a simple test which will confirm whether my interpretation is correct. Start by recording the current raw value of the POH attribute, then wait one minute and record it again. The difference should be 60,000 milliseconds (decimal). If you can post the before-and-after raw values (using HDDScan), I can do the calculations for you.