PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/29-12:28:10
G02     215.5          57.8                7.5 +/-    0.91       8.7 +/-    0.91  0.060 / 0.090
G06     59.8           74.3                4.3 +/-    0.87       4.5 +/-    0.87  0.070 / 0.090
G12     318.0          36.1                3.5 +/-    1.28       5.5 +/-    1.28  0.030 / 0.030
G17     54.9           34.3                1.6 +/-    0.58       2.5 +/-    0.58  0.030 / 0.030
G19     39.6           48.4                2.4 +/-    0.43       3.1 +/-    0.43  0.050 / 0.100
G24     268.7          41.2                6.3 +/-    1.45       9.0 +/-    1.45  0.070 / 0.090
G28     119.5          21.2                5.5 +/-    0.72      11.8 +/-    0.72  0.040 / 0.040