Complex sentence: The system has ten stations on two lines, working only from 6:00 AM to 8:00 PM, Mondays to Fridays, and covering a very small amount of the city.
Split into simpler sentences: The system has ten stations on two lines. It works only from 6:00 AM to 8:00 PM, Mondays to Fridays, and covers a very small amount of the city.