PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-21:42:50
G02     46.2           43.7                8.1 +/-    0.72      11.2 +/-    0.72  0.050 / 0.060
G05     94.5           69.2               10.9 +/-    0.56      11.6 +/-    0.56  0.050 / 0.060
G12     189.8          51.7               11.2 +/-    0.72      13.8 +/-    0.72  0.040 / 0.060
G25     267.6          58.3                8.7 +/-    0.78      10.1 +/-    0.78  0.040 / 0.060
G29     319.0          41.6               10.8 +/-    0.88      15.3 +/-    0.88  0.060 / 0.070