Talk:Primary PM2.5 emissions from bus traffic in Helsinki Metropolitan Area
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The year of observation must be clear -- Jouni 13:32, 21 February 2008 (EET)
--#(number): : The scope does not define the year of observation. Therefore, results on emissions from any year could be in the result of the variable. The text in the data and result must be explicit about which year it is about. --Jouni 13:32, 21 February 2008 (EET)