13 Nevertheless, these results suggest that data obtained using TEM to simulate CO exposures may provide more sensitive information for assessing the impact of traffi c management strategies than traditional on-site measurement.
Results — Grammar and Writing Skills 95 order in which events occurred but they don't provide information about how long each event took, how soon the next event occurred or where it occurred in the sequence. A clear understanding of the time sequence will help your reader to picture it and repeat it for themselves. Th e words and phrases that communicate sequence can be divided into eight groups. 1) Th e fi rst group contains words or phrases which refer to events that occurred before you began your experiment/simulation or before you began observing your results: It was apparent beforehand that a reduction in temperature would be a desirable outcome. 2) Th e second group marks the beginning of the experiment/simulation or the fi rst result you are describing: At the beginning the temperature was stable, as predicted. 3) Th e third group contains words/phrases which tell you the order in which events occurred but do not give any information about the time sequence: Th e temperature increased to 49°C and then dropped to 30°C. In this case, the drop in temperature may have occurred quite soon aft er the temperature reached 49°C or it may have taken a long time; the word then only tells the reader the order in which these events occurred. 4) Th e fourth group is used to communicate that there was (only) a short period of time between two events: Th e temperature increased to 49°C but soon dropped to 30°C. 5) Th e fi ft h group communicates that the period of time between events was long, or that the event occurred near the end of the sequence: Th e temperature increased to 49°C and later dropped to 30°C. 6) Th e sixth group is extremely useful and important. It contains words and phrases that are used to communicate that events occurred at the same time or almost at the same time, or during the same period, and