Only for outdoor sports fields, it can be divided into kinds of fields, such as the football field, basketball field, outdoor stadium field, baseball field, tennis court, etc. And sometimes the fields will not have detailed usage, thus it needs a general standard to ensure the illumination of the sports field.
The general standard can be as below:
The lighting standards of current sports field include:
-NFL: 250 foot candles
-Collegiate-level football: 150 foot candles
-High school football fields: 50 foot candles
