PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/05-01:27:50
G02     44.2           45.3                7.5 +/-    0.39      10.0 +/-    0.39  0.040 / 0.050
G05     104.6          68.8                7.0 +/-    0.24       7.4 +/-    0.24  0.040 / 0.050
G12     192.7          56.5                9.4 +/-    0.85      11.0 +/-    0.85  0.050 / 0.060
G25     273.5          58.6                8.0 +/-    1.00       9.2 +/-    1.00  0.050 / 0.060
G29     317.9          40.7                8.6 +/-    1.00      12.3 +/-    1.00  0.030 / 0.050