PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/30-07:58:10
G03     252.0          69.2                6.5 +/-    0.73       7.0 +/-    0.73  0.030 / 0.060
G09     302.3          17.8                3.8 +/-    1.48       8.8 +/-    1.48  0.030 / 0.060
G14     96.5           18.1                4.6 +/-    1.12      10.6 +/-    1.12  0.110 / 0.240
G16     127.0          57.1                6.2 +/-    0.42       7.2 +/-    0.42  0.100 / 0.250
G22     197.9          58.8                6.5 +/-    0.91       7.5 +/-    0.91  0.040 / 0.040
G23     317.1          46.9                2.9 +/-    1.17       3.8 +/-    1.17  0.040 / 0.040
G26     71.5           51.4                6.0 +/-    0.32       7.4 +/-    0.32  0.040 / 0.060
G31     51.3           20.0                1.0 +/-    0.95       2.3 +/-    0.95  0.040 / 0.050