Hello Everyone, so I basically ran out an excel sheet that has some tables with different wind speeds ranging from 7-12 m/s that shows how a pollutant mass in the air can reach a town that is far away from the air pollutant by specific distances. The wind speed is 7-12m/s in the y-direction (east to west) and the x-direction is constant 10m/s. The pollutant reaches the time after I copy and paste the tables 60 times. Can someone suggest me around 6 sources of errors that can be possible to occur in my experiment using the excel sheet ?and How can I improve these six errors that occurred?