Each row shows a foreman group and each column is a data field collected by a foreman on site.

Each cell is the probability of accuracy for a data field entered by a foreman. For example, probability of accuracy for "data field 1" collected by "drainage foreman" is 0.82.

The followings are the definitions of the data fields that are used in tables:
1: crew working hrs.job code
2: crew working hrs.actual hours worked for foreman+laborers
3: crew working hrs.actual hours worked for operators
4: production data.job code
5: production data.quantity of work
6: production data.unit of work
7: production data.location of work
8: production data.material type and quantity used
9: production data.description of work performed
10: equipment working hours.job code
11: equipment working hours.actual hours worked for eqps