The above two bar charts present the actual and target arriving time of a bus company and the complaint rate of this company over a 5-year period from 1999 to 2003.
The first bar reflects the punctuality record by providing the comparison of actual and target arriving time. Most of the time, the actual arriving time is approximately 1% lower than target timetable, like in 1999, 2001 and 2002. There is an exception of 2000, in which year nearly 4% of buses came later than the schedule. The punctuality rate of 2003 shows different sign of former years. The buses arrived actually on time at a higher rate of 0.5 % than they should.
The second bar illustrates the number of complaints among per thousand passenger journeys. Bsically, the amount of complaints steadily increased each yeal, except in 2001, which indicates a slight decline compared with 2000. The complaints rates of 1999-2000 as well as 2001-2002 grew rapidly at a rate of 30 passengers. In contrast, from 2002 to 2003, the number of complaints presents a modest upward trend with 10 complaints increasing a year.
In summary, these two charts provide abundant infromation about the puctuality and complaints of a bus company.