
tf1= Gypsum  f1a DLw 2.11    2.145   2.288   2.318
tf2= Gypsum  f2a DLw 1.497   1.518   1.566   1.596
tf3= Gypsum  f3a DLw 1.665   1.695   1.765   1.785
tf4= Gypsum  f4a DLw 2.225   2.255   2.288   2.318
