PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/13-15:42:50
G02     216.3          57.2              -13.5 +/-    0.89     -15.7 +/-    0.89  0.060 / 0.060
G06     58.4           74.1               10.0 +/-    0.55      10.4 +/-    0.55  0.060 / 0.060
G12     317.7          34.9                8.6 +/-    1.51      13.6 +/-    1.51  0.080 / 0.070
G17     54.1           35.7                9.8 +/-    1.42      15.4 +/-    1.42  0.050 / 0.080
G19     40.1           48.2                9.3 +/-    1.37      12.0 +/-    1.37  0.030 / 0.030
G24     267.0          41.2               11.1 +/-    0.69      15.8 +/-    0.69  0.030 / 0.030
G28     120.3          19.8                9.3 +/-    1.47      20.5 +/-    1.47  0.040 / 0.050