PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/23-16:58:10
G02     212.8          53.4               11.9 +/-    1.08      14.4 +/-    1.08  0.070 / 0.070
G06     75.1           77.8                9.5 +/-    0.28       9.6 +/-    0.28  0.080 / 0.070
G12     315.9          30.2                9.7 +/-    1.38      16.9 +/-    1.38  0.070 / 0.090
G17     50.7           38.1                8.6 +/-    0.94      13.0 +/-    0.94  0.080 / 0.050
G19     34.5           51.4                8.3 +/-    1.83      10.3 +/-    1.83  0.110 / 0.170
G24     272.8          41.9               12.6 +/-    1.69      17.8 +/-    1.69  0.100 / 0.190
G28     117.0          22.8                9.0 +/-    1.59      18.6 +/-    1.59  0.050 / 0.050