Thank you very much! That was really helpful. Is there any way to reduce the border thickness of legends?

Thank you @RaymondGhaffarianShirazi and @Sarah! I have another question. I have 24 runs that I'd like to allocate a maximum time (e.g., 2 hours) to each run. So, I'll need 48 hours, but if I distribute these 24 runs among 4 kernels, the whole computations can be done in 12 hours. How can I do that? Any help/idea would be appreciated!

Thanks, but when I write TimeConstrained[SelectionEvaluate[nb1], 5], it does not abort the evaluation.