PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/27-22:42:30
G02     63.5           29.4                8.8 +/-    0.55      15.6 +/-    0.55  0.110 / 0.260
G05     51.5           55.6                8.8 +/-    0.72      10.5 +/-    0.72  0.090 / 0.360
G12     184.4          28.8               12.9 +/-    1.37      23.2 +/-    1.37  0.050 / 0.090
G13     122.5          18.5               13.3 +/-    3.14      30.4 +/-    3.14  0.060 / 0.070
G15     160.2          17.1               14.1 +/-    2.28      33.4 +/-    2.28  0.110 / 0.140
G21     275.9          20.2               10.9 +/-    1.29      23.9 +/-    1.29  0.080 / 0.130
G25     230.1          48.2               14.6 +/-    1.93      18.8 +/-    1.93  0.080 / 0.130
G29     334.1          61.1               10.5 +/-    0.86      11.8 +/-    0.86  0.060 / 0.130