Fix reproducibility issues in png files

[pspp] / doc / screenshots / independent-samples-t-hc.png

diff --git a/doc/screenshots/independent-samples-t-hc.png b/doc/screenshots/independent-samples-t-hc.png
index c52999cf9838d0d9cec3c709c13942883dd92cee..7b8e0fa3809b776e648b5057a3b9a31b270ba79f 100644 (file)
Binary files a/doc/screenshots/independent-samples-t-hc.png and b/doc/screenshots/independent-samples-t-hc.png differ