d1ubdc1    d1ubdc2    d1ubdc3    d1ubdc4 
d1ubdc1           0.0      118.0      124.0      118.6 
d1ubdc2         118.0        0.0      122.8      117.4 
d1ubdc3         124.0      122.8        0.0      123.4 
d1ubdc4         118.6      117.4      123.4        0.0