Hard Disk Monitoring

I have simple issue but i can't find fix for it, my S.M.A.R.T History Graph is too long, just take look at this screenshot:

it's seagate btw, but i have it on every hard drive, how to remove this 01.12.2019 entry, or for example display only last 6 months?

i guess i run pc after clearing bios or something and just this happend.

Generally the graph designed exactly to keep the oldest date and the value ever recorded it for reference as a "base" - and then automatically log new data and focusing on the most recent days (this is why you see more values recorded recently). Other (older, except the oldest) values automatically discarded.

By default, Hard Disk Sentinel selects which days to display, and if you double click on the graph, you can see ALL values recorded (more points) and if you prefer to examine values with more details, then you can right click on the graph and use the Save disk information function to export all displayed dates/values in a CSV file. It can be opened with Excel to examine/investigate (and even make a different graph).

Generally checking the changes is more important for S.M.A.R.T. attributes showing a linear change, degradation like start/stop count, power on time, SSD wearout and so.
The Raw read error rate on a Seagate drive is very fluctuating as described many times in this forum already, so it may not as useful to inspect.

Yeah, i understand, but this is my issue:
without doubleclick:

With doubleclick:


I thought that i can edit HDD sentinel data in .dat files using NBT Explorer but it doesn't recognize file