Hello! Firstly my apologize for so many questions ...

But again I have a question for the digital hygrometer. I tested its accuracy in the test salt test and the results are totally strange. As there was a longer time, more distinct values show:
6 hour - 68 percent
12 hours 72 percent
24 hour - 73 percent
36 hour - 74 percent
48 hour - also 74 percent

Which of those numbers is correct? And I was looking for an answer anywhere on the Internet and write otherwise - 6 hour is correct, others that the 24 hour is right ... What do you think?

PS: I had a hygrometer in a double package.

Thanks fot answers.