hi all - it's a question on nitrogen if anyone knows about that stuff!
I'm just going through some old data that I have, trying to work out how to calculate the Total Nitrogen, when all I have is the Total Oxidised Nitrogen (NO3 and NO2) and ammonia (NH4). I think I'm still missing the Total Organic Nitrogen numbers to make it all work, but on the old spread sheet I was given that's all the data that's on there, so it looks like that's all that was used to work out the TN...I'm totally confused, I've no idea how to work it out and I need the data to do stats this evening...:-(