Data analysis -- Comparing temperature data from multiple sources Dear Peter, I am Engineering student from Japan.I have installed 8 sensors,4 at rural and 4 at urban area.Those sensors measures the temperature and other property in time series format.Now, I am using one month data and comparing the temperature tendency between Urban and rural. The steps which i followed to compare the urban data and rural are as follows. 1) I averaged the 4 sensors data in time series format.(for both Urban and rural for a day)\ 2) like wise i averaged the above values for 1 month in time series format for both urban and rural. 3) now i am comparing the data between the urban and rural in time series format. is it the proper way to compare or there are some other techniques available? for this case do i need to check the significance of the data? if yes, what can be the possible significance test?