#Urea (M)	measurement
0.         	-23.89837713
0.5        	-23.24530933
1.         	-22.79452097
1.5        	-23.7613642 
2.         	-23.27056347
2.5        	-22.8151767 
3.         	-23.01674191
3.5        	-22.37725925
4.         	-23.80488508
4.5        	-23.72794629
5.         	-24.13859708
5.5        	-23.77892166
6.         	-23.6995255 
6.5        	-24.15607134
7.         	-24.19644205
7.5        	-24.40185765
8.         	-24.16706236