PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/22-21:57:50
G02     39.7           49.2                8.9 +/-    0.34      11.3 +/-    0.34  0.040 / 0.060
G05     118.8          67.7               10.4 +/-    0.69      11.1 +/-    0.69  0.040 / 0.060
G06     57.8           10.2                7.4 +/-    2.61      20.6 +/-    2.61  0.050 / 0.070
G12     194.3          60.7               10.3 +/-    0.91      11.6 +/-    0.91  0.050 / 0.070
G25     283.7          57.1               10.0 +/-    1.35      11.7 +/-    1.35  0.050 / 0.050
G29     313.7          35.5               10.4 +/-    1.10      16.4 +/-    1.10  0.040 / 0.050