PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/23-13:27:40
G02     200.8          13.6                6.1 +/-    1.69      15.7 +/-    1.69  0.090 / 0.170
G06     170.8          49.4                7.8 +/-    0.83       9.9 +/-    0.83  0.080 / 0.180
G13     229.1          16.4                7.4 +/-    2.76      17.7 +/-    2.76  0.050 / 0.080
G17     10.3           65.8                4.8 +/-    0.73       5.2 +/-    0.73  0.060 / 0.080
G19     312.3          72.2                4.7 +/-    0.61       4.9 +/-    0.61  0.050 / 0.060
G24     312.9          25.4                5.3 +/-    2.48      10.2 +/-    2.48  0.050 / 0.060
G28     77.0           47.5                4.7 +/-    0.58       6.1 +/-    0.58  0.090 / 0.360
G30     156.7          19.2                7.0 +/-    2.73      15.6 +/-    2.73  0.080 / 0.290