Date,Time,DOC,NH4-N,NO3-N YYYY-MM-DD,HH:mm:SS,mg C/l,µg N/l,µg N/l 2003-07-11,12:00:00,57.08,,41.162955 2003-09-11,12:00:00,51.9199981689,86.4110064,23.0158458