The line graph illustrates the proportion of the UK population (aged over 4 years) that tuned into the radio and television throughout a typical day between October and December 1992.
Overall, the graph shows that radio listening increased in the morning, while television viewership reached its highest levels in the evening. Both had lowest audiences in the early morning hours.
At 6:00 a.m., radio audiences began at around 8% and, reaching their peak at 28% around 8:00 a.m. This is because people in the morning can start their day by listening to the news or other content. They do not use television because, while listening to the radio, they can do some other activity, and they can bring the radio along with them. Then, radio listening declined for the rest of the day, decreased to 10% by 4:00 p.m. and continuing to fall until reaching a low of just 2% at around 2:00 a.m. This is because, from 4:00 p.m. until 2:00 a.m., people already watch television to rest after working outside.
In contrast, television viewership started much lower, at about 5% at 6:00 a.m., and remained below 10% until midday. The percentage of viewers then began to climb sharply from around 4:00 p.m., peaking at 46% at around 8:00 p.m. After reaching this peak, viewership declined rapidly decreased 15% by 10:00 p.m., before dropping more gradually to 5% at 2:00 a.m. and remaining low for the rest of the night. The numbers sharply decreased because most of the population is asleep, so not many people use television at 2:00 a.m.
In conclusion, the graph clearly indicates that more people use the radio in the morning than television; radio had a strong morning audience. Television viewing was more popular in the evening, because many people are more relaxed at that time. So, each medium shows distinct patterns of usage throughout the day, both morning and night.