PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/14-21:57:50
G02     51.0           40.2               10.2 +/-    0.73      14.8 +/-    0.73  0.020 / 0.040
G05     77.2           67.6               12.6 +/-    0.40      13.5 +/-    0.40  0.030 / 0.040
G12     184.2          40.7               13.7 +/-    1.57      19.7 +/-    1.57  0.040 / 0.080
G21     263.5          10.5                1.4 +/-   26.06       4.0 +/-   26.06  0.080 / 0.090
G25     253.1          57.1               13.1 +/-    0.83      15.3 +/-    0.83  0.050 / 0.060
G29     321.3          44.5               11.5 +/-    1.06      15.6 +/-    1.06  0.040 / 0.050