TN-TC change in bioretention cells at GIRF

This dataset contains Total Nitrogen and Total Carbon in nine bioretention cells over a period of three years. Composite soil samples from each garden were collected once every year in October.
Total Nitrogen/Carbon was determined by the combustion method based on Dumas method(1). The instrument used for analyzing is Elementar Vario Max Cube.
Units are in percentage which is the percent of the total mass.

Details on GIRF bioretention and schematic is attached.

1. Total Nitrogen and Carbon by Combustion In Soil, Plant and Water Reference Methods for the Western Region (WREP 25). 2005. 3rd Edition. R. Gavlak, D. Horneck, R. O. Miller. pp. 116-117.