Date           site             Transect_Position  actual_length  chain_measure  rugosity_measure  
2014-8-8       Europa           0                  10.85          12.67          1.167741935       
2014-8-8       Europa           10                 12.15          13.9           1.144032922       
2014-8-8       Europa           20                 12             14.23          1.185833333       
2014-8-8       Europa           30                 11.02          13.63          1.236842105       
2014-8-8       Europa           40                 10.36          11.85          1.143822394       
2014-8-8       Europa           50                 9.36           10.04          1.072649573       
2014-8-13      East Cabritte    0                  9.3            11.1           1.193548387       
2014-8-12      East Cabritte    10                 11.55          14.44          1.25021645        
2014-8-12      East Cabritte    20                 13.5           15.65          1.159259259       
2014-8-12      East Cabritte    30                 11.7           14.53          1.241880342       
2014-8-13      East Cabritte    40                 12.75          15.08          1.182745098       
2014-8-13      East Cabritte    50                 10.45          13.61          1.302392344