PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/25-20:27:40
G05     50.2           14.0                6.2 +/-    2.68      15.8 +/-    2.68  0.050 / 0.070
G10     239.0          17.5               11.2 +/-    2.36      26.3 +/-    2.36  0.050 / 0.080
G13     68.8           34.6                7.9 +/-    1.75      12.7 +/-    1.75  0.070 / 0.120
G15     117.6          55.1                9.8 +/-    0.40      11.7 +/-    0.40  0.060 / 0.140
G16     309.9          14.0                7.6 +/-    1.66      19.5 +/-    1.66  0.030 / 0.040
G20     253.1          40.9                9.4 +/-    2.00      13.4 +/-    2.00  0.030 / 0.050
G21     317.4          49.2                8.0 +/-    0.81      10.2 +/-    0.81  0.100 / 0.190
G26     282.8          19.6                8.5 +/-    1.55      19.0 +/-    1.55  0.090 / 0.160
G29     156.7          67.4                9.5 +/-    0.55      10.2 +/-    0.55  0.120 / 0.340