How to Use "mid" with Example Sentences

1. Apple macbook pro with retina display review ( mid 2012 )
2. Here we have a photo with light and mid tones but no dark tone .
3. The marshes were systematically drained in the mid - to late 20th century .
4. But imagine you will be sitting down having a mid year review , how would you fair ?
5. This classic is about a little girl living in the big woods of wisconsin in the mid to late 1800s .