Sure, but instead of reinventing the wheel, let's use the optimized standard deviation function from the NumPy package.

```python
import numpy as np

stdev1 = np.std(np.array([61, 62, 59, 60, 63, 62, 58]))
stdev2 = np.std(np.array([12, 96, 71, 66, 108, 23, 5, 59]))

```
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