Thoughts on this temp to specific gravity chart I found?

[PeanutWorms]

I was given my tank. Had octo's, now in the process of converting to corals.
I found this chart in the info that my friend gave me. Thoughts on it? No idea where it came from.

Specific Gravity Readings at Different Temperatures for a Salinity Value of 35.0 0/00
Temperature Specific Gravity Salinity
C F
10 50 1.026 35
15 59 1.025 35
20 68 1.024 35
25 77 1.022 35
30 86 1.021 35

 

[Tastee]

If you are measuring salinity with a Hydrometer then you need to take the temperature into account. Here is a site that explains it in simple terms.

Salinity & Specific Gravity

Saltwater aquarium & reef salinity and specific gravity review and charts.

www.algone.com