1  Name,Relative_Permittivity,Loss_Tangent,Frequency,Comments
 2  "RO4350B",4.38,0.003,12000000000,""
 3  "Air",1,0,1000000000,""
 4  "FR4",4.8,0.026,100000000,""
 5  "Teflon",2.1,0.0002,100000000,""
 6  "Foam",1.03,0.00015,50000000,""
 7  "Polystyrene",2.55,0.0001,100000000,""
 8  "Plexiglas",2.59,0.00676,10000000000,""
 9  "Fused quartz",3.78,0.0001,10000000000,""
10  "E glass",6.22,0.0023,100000000,""
11  "RO4725JXR",2.55,0.0022,2500000000,""
12  "RO4730JXR",3,0.0023,2500000000,""
13  "TMM3",3.45,0.002,10000000000,""
14  "TMM4",4.7,0.002,10000000000,""
15  "TMM6",6.3,0.0023,10000000000,""
16  "TMM10",9.8,0.0022,10000000000,""
17  "TMM10i",9.9,0.002,10000000000,""
18  "Taconic RF-35",3.5,0.0018,1900000000,""