How to join elements from two arrays in a third one?

[Felipe]

Hi guys,

I have two arrays "p" and "prec" as the following.
p:

Output:
[[  2 -30  20   4]
[  2 -28   30   4]
[  2  19  50   6]
[  1 -27  60   3]
[  2   3  71   6]]

prec:

Output:
[[ 0  0.1  0  0.1]
[ 0  0.1  0  0.1]
[ 0  0.1  0  0.1]
[ 0  0.1  0  0.1]
[ 0  0.1  0  0.1]]

I'd like to construct a third array that joins element by element from the previous arrays with the Latex symbol '$\pm$' in the middle, like this:

Output:
[[  2 ± 0  -30 ± 0.1  20 ± 0  4 ± 0.1]
[  2 ± 0  -28 ± 0.1  30 ± 0  4 ± 0.1]
[  2 ± 0  19 ± 0.1  50 ± 0  6 ± 0.1]
[  1 ± 0  -27 ± 0.1  60 ± 0  3 ± 0.1]
[  2 ± 0  3 ± 0.1  71 ± 0  6 ± 0.1]]

So every element of the new array is composed of two numbers with ± in the middle. I tried different approaches, but I still have no idea about how to do it...
Thanks for the help !!