The table displays the observed value for each of statistics, the Z-score for the observed value, the mean and standard deviation of the distribution and the upper and lower p-values. Below the statistics is a list of the values in each of the randomizations. You will see that the upper and lower tail p-values are not significant for OS and OG. There is no significant association between warbler abundance and vegetation boundaries.
The Z-score standardizes by dividing by the standard deviation. For those statistics that have no variance, the standard deviation is zero and the Z-score cannot be calculated. In this instance, BoundarySeer will display "DIV/0" in the table and the histogram of that statistic will not be produced.