Combinations of Ⓒ variables must be unique

Multiple entries (rows) per site can be submitted for this group.
Only one observation for the same combination of Ⓒ variables is permitted.

Combination of Ⓒ variables are unique.
Do not enter combination of Ⓒ variables that are the same.
Observation Contextual variable
HEIGHTC HEIGHTC_STATISTIC HEIGHTC_DATE HEIGHTC_APPROACH
1-Required 1-Required Required-c Optional
m LIST(STATISTIC) YYYYMMDDHHMM free text
9.8 Mean 2003 5 2x2m plots
10.2 Mean 2004 5 2x2m plots
0.4 Standard Deviation 2004 5 2x2m plots
13.2 Maximum 2004 5 2x2m plots
14.4 Maximum 2004 extracted from LIDAR