diff --git a/src/test/java/org/mastodon/mamut/feature/dimensionalityreduction/tsne/TSneTest.java b/src/test/java/org/mastodon/mamut/feature/dimensionalityreduction/tsne/TSneTest.java
index 82901b1e0..81a3a46ef 100644
--- a/src/test/java/org/mastodon/mamut/feature/dimensionalityreduction/tsne/TSneTest.java
+++ b/src/test/java/org/mastodon/mamut/feature/dimensionalityreduction/tsne/TSneTest.java
@@ -51,10 +51,14 @@ void test()
 		int numCluster1 = 50;
 		int numCluster2 = 100;
 		double[][] inputData = RandomDataTools.generateSampleData( numCluster1, numCluster2 );
+		for ( int i = 0; i < inputData.length; i++ )
+		{
+			logger.debug( "inputData[{}]: {}, {}", i, inputData[ i ][ 0 ], inputData[ i ][ 1 ] );
+		}
 		logger.debug( "dimensions rows: {}, columns:{}", inputData.length, inputData[ 0 ].length );
 
 		final Random random = new Random( 42 );
-		System.out.println( "random 42 next Double: " + random.nextDouble() );
+
 
 		// Recommendations for t-SNE defaults: https://scikit-learn.org/stable/modules/generated/sklearn.manifold.TSNE.html
 		double perplexity = 30d; // recommended value is between 5 and 50