reference|http://fluxnet.fluxdata.org/data/fluxnet2015-dataset/fullset-data-product/
short_description|FLUXNET_ECB-METHOD_HH
long_description|FLUXNET method to compute ECM for hourly data
codeTYPE|S
@| Values
1|Driver data points within sliding window 
2|number of ECB_CF data points