Calculation of clear count, wet count and water summary (percentage of clear observations that are wet).
For each WOfS pixel through time,
- count the number of clear observations (ie observations not masked by pixel quality for cloud, shadows or sensor issues) to produce clear count dataset;
- count the number of clear observations that are wet to produce wet count dataset;
- create the ratio of wet to clear from the wet and clear count datasets and produce as a percentage dataset.