The graph below shows the demand for electricity in England during typical days in winter and summer. (Cambridge IELTS 4, page 54)
The given illustrates the consumption of electricity during winter and summer for 24hrs in England. The minimum amount of electricity used during summer is at 9 pm, and minimum is 20000units and 12 to 15hrs. The highest use in winter is between 21 to 23hrs, 48000units, and minimum is between 6 to 9hrs, 30000unit. The consumption of electricity is more in winter than in summer.
To begin with, during summer, 18000units of electricity is used at 0hrs which is gradually dropped and reached to the minimum of 12000units at 9am. The following 4hrs the consumption of electricity showed a sharp increase and touched the peak level between 13 to 15 hrs. The next two hours the demand decreased and remained in the constant level roughly, until 21hr, 26000units. The next one hour it gained the second highest level of consumption just below 20000units and then dropped.
During wintertime, the use of electricity is raised sharply until 3hrs and reached below 40000units followed by a sharp drop in the next four hours. It reached the minimum level between 6 to 9hrs, thereafter, the rate shooted. At 14hrs it reached to 40000units and remained constant for the next 5 hours. It showed the maximum consumption between 21 to 22hrs, 48000units, then dropped to 35000 at 24hours.