Daily usage of parking spaces, at the local park, has been as follows for the previous month. 50, 34, 20, 33, 123, 60, 32, 41, 3, 34, 46, 46, 51, 62, 47, 33, 34, 50, 10, 72, 51, 20, 50, 41, 47, 60, 55, 57, 49, 33. Find the Standard Deviation.

1. 33
2. 440.09
3. 46.5
4. 21.34