PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/24-14:42:30
G01     48.3           24.0                7.2 +/-    1.45      14.4 +/-    1.45  0.050 / 0.050
G06     176.7          26.1               10.8 +/-    0.96      20.5 +/-    0.96  0.040 / 0.050
G11     44.3           14.7                6.3 +/-    2.40      15.8 +/-    2.40  0.020 / 0.030
G13     248.0          30.5                9.2 +/-    1.48      16.0 +/-    1.48  0.030 / 0.030
G15     282.5          15.4                7.6 +/-    1.13      18.7 +/-    1.13  0.120 / 0.150
G17     301.8          78.0                9.6 +/-    0.47       9.8 +/-    0.47  0.120 / 0.170
G19     248.5          62.4                9.6 +/-    0.76      10.7 +/-    0.76  0.060 / 0.040
G28     45.4           56.2                8.6 +/-    0.55      10.1 +/-    0.55  0.040 / 0.040
G30     150.1          39.4                9.2 +/-    0.82      13.5 +/-    0.82  0.210 / 0.320