2d array transform with key values : I have following 2D-Array.

    [['4470', '4753.5', '5682', '4440', '6113.5', '3661.5', '7555.3', '6090.3', '5147.3', '4296'], ['4468.5', '4742.5', '5297', '5501.8', '5061.3', '2933.5', '6367.5', '6053.8', '5654.3', '3793.3']]

I want to tranform it with key values
e.g.

    [[('1','4470'),('2', '4753.5'), ...], [......]]
Can anyone helps me?