The variables are:
Zone |
an indicator for the closed (1) and open (0) zones |
Year |
an indicator of 1992 (0) or 1993 (1) |
Latitude |
latitude of the sampling position |
Longitude |
longitude of the sampling position |
Depth |
bottom depth |
Score1 |
catch score 1 |
The details of the survey and an analysis of the data are provided by Poiner et al. (1997), The effects of prawn trawling in the far northern section of the Great Barrier Reef, CSIRO Division of Marine Research, Queensland Dept. of Primary Industries.