Complex sentence: In Tegucigalpa, there are more than 500 perforated wells, which yield 1--3 l/s of groundwater, some have greater yields of (2--20 l/s).
Split into simpler sentences: In Tegucigalpa, there are more than 500 perforated wells, which yield between 1--3 liters per second (l/s) of groundwater. Some have greater yields of (between 2 and 20 l/s).