PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/18-16:42:40
G05     49.1           17.7                6.8 +/-    1.14      15.7 +/-    1.14  0.080 / 0.150
G10     237.8          16.4               10.9 +/-    1.79      26.2 +/-    1.79  0.070 / 0.140
G13     70.9           34.8                8.0 +/-    0.66      12.8 +/-    0.66  0.050 / 0.060
G15     117.2          54.3                9.5 +/-    0.53      11.4 +/-    0.53  0.050 / 0.070
G16     310.9          13.8                7.8 +/-    1.45      20.0 +/-    1.45  0.140 / 0.330
G20     251.9          41.0               10.7 +/-    1.26      15.4 +/-    1.26  0.120 / 0.320
G21     316.2          48.4                8.5 +/-    0.72      10.9 +/-    0.72  0.040 / 0.030
G26     284.6          19.8                9.0 +/-    1.30      19.9 +/-    1.30  0.030 / 0.050
G29     155.8          70.3               10.0 +/-    1.28      10.6 +/-    1.28  0.080 / 0.190