CSVs-describing-the-NFI-spatial-design.md

@@ -78,7 +78,7 @@ Records of the **clusters.csv** file define clusters associated with particular
 | **stratum** | VARCHAR (20) | KEY to **strata** NOT NULL | Mandatory link to a particular record in strata.csv.|
 | **panel** | VARCHAR (20) | KEY NOT **panels** NOT NULL | Mandatory link to a particular record in panels.csv.|
 | **cluster** | VARCHAR (20) | NOT NULL | Mandatory cluster identifier, unique within the given panel. 
-| **sampling_weight_ha** | NUMERIC | NOT NULL | The area of the sampling frame represented by the particular cluster. Corresponds to the value of the inverse inclusion density as defined by Cordy (1993), see chapter 2 within Part II (Estimation methods implemented by nFIESTA) of [DIABOLO T2.10 technical report](https://gitlab.com/nfiesta/nfiesta_pg/-/wikis/myuploads/d2.10_report/d2.10_report.pdf). The sum of sampling weights of all clusters must equal to the area of the sampling frame (and stratum in case of single-plot designs).|
+| **sampling_weight_ha** | NUMERIC | NOT NULL | Mandatory area of the sampling frame represented by the particular cluster. Corresponds to the value of the inverse inclusion density as defined by Cordy (1993), see chapter 2 within Part II (Estimation methods implemented by nFIESTA) of [DIABOLO T2.10 technical report](https://gitlab.com/nfiesta/nfiesta_pg/-/wikis/myuploads/d2.10_report/d2.10_report.pdf). The sum of sampling weights of all clusters must equal to the area of the sampling frame (and stratum in case of single-plot designs).|
 | **comment** | TEXT | NULL| Optional comment. |
 
 # Plots