MTBF result please..
It means I ask you to estimate how long user use KB at high temperature (60 degree) / day.
How many day they use KB / year too.
From these information, you can estimate use case under high temperature / year. ---A
Temperature cycling test did 10 hour at high temperature. --- B
By compare A and B, you can answer that how long year endurance did be assumed by this test.
For example, if you estimate user use case under high temperature 2 hour / year,
It means temperature cycle test assume 5 year using.
If it is under 3 year, I cannot understand how to you set temperature cycling test parameter.