PCA interpretation produces 6 files for each principal component (numbered "NN", e.g. "01"), described below:

pcNN-eigenvector.png Tab-delimited text file listing the conditions that are up, flat and down for pcNN, ordered by decreasing difference of means.
pcNN-outliers.txt Tab-delimited text file listing the genes that are high and low outliers for pcNN, including pcNN coefficient, and additional GNF gene annotations, including: ProbeId, Name, Aliases, Description, Function and Protein Families.
pcNN-outliers.png Scatter plot of probe expression levels projected onto PCn-1 vs PCn space with high and low outlier sets highlighted in red.
pcNN-condition-groups.txt Tab-delimited text file listing the conditions that are up, flat and down for pcNN, ordered by decreasing difference of means.
pcNN-outlier-trajectories-order-original.png Trajectory plots for high and low outlier sets with tissues in the order in which the original data were provided.
pcNN-outlier-trajectories-order-meandiff.png Trajectory plots for high and low outlier sets with tissues ordered by decreasing mean differences, and thus grouped by significance (up group at left, flat group in middle and low group at right).

Note: There is no outlier scatter plot for pc01; see pc02-outliers.png for the pc01 vs. pc02 projection.