Date,Time,DOC,NH4-N,tot-N,NO2-N/NO3-N YYYY-MM-DD,HH:mm:SS,mg C/l,µg N/l,mg N/l,µg N/l 2003-05-28,12:00:00,115.5999984741,,, 2003-06-13,12:00:00,118.8000030518,105.0840257,,46.4743041 2003-07-11,12:00:00,161.1999969482,96.9709208,,20.3601713 2003-09-11,12:00:00,116.9000015259,89.2441542,,26.9993576 2004-04-20,12:00:00,15.4899997711,15.1959743,1.09, 2004-06-09,12:00:00,,30.6495075,1.73,79.2276231