PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/18-16:13:10
G03     230.7          68.7                9.5 +/-    0.62      10.2 +/-    0.62  0.140 / 0.390
G09     302.5          16.8                7.5 +/-    1.39      17.9 +/-    1.39  0.150 / 0.480
G14     99.1           14.2                7.6 +/-    2.44      19.4 +/-    2.44  0.050 / 0.030
G16     138.4          56.2                9.6 +/-    0.53      11.3 +/-    0.53  0.030 / 0.030
G22     191.4          53.8               10.1 +/-    0.84      12.2 +/-    0.84  0.050 / 0.050
G23     317.8          47.6                8.4 +/-    0.98      10.9 +/-    0.98  0.050 / 0.060
G26     76.1           54.8                8.1 +/-    0.50       9.6 +/-    0.50  0.200 / 0.250
G31     51.3           22.0                6.2 +/-    3.39      12.9 +/-    3.39  0.210 / 0.300