Using the query button, you can click on buildings and monitor their condition. On some buildings, if you click you get a random fact (ex. Airport- Lost luggage). Through playing the game, I have concluded that these "random" facts are actually measures of Mayor Rating. At 100 mayor rating:

0 Lost Luggage - Airport

0 Noogies given - Private School

70 Weddings per Week - House of Worship

1 trillion Digits of Pi calculated - Advanced Research Center

0 Classes Cut - University

Any many others...

The numbers vary based on mayor rating.