PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/11-15:42:30
G03     222.9          65.6                9.2 +/-    0.93      10.0 +/-    0.93  0.180 / 0.250
G09     304.9          19.7                7.0 +/-    1.06      15.4 +/-    1.06  0.140 / 0.350
G14     101.2          15.3                9.7 +/-    2.69      24.0 +/-    2.69  0.040 / 0.060
G16     118.4          61.2                9.9 +/-    0.53      11.2 +/-    0.53  0.050 / 0.070
G22     187.9          49.1                9.6 +/-    0.95      12.3 +/-    0.95  0.040 / 0.060
G23     325.3          55.0                8.8 +/-    0.45      10.5 +/-    0.45  0.040 / 0.050
G26     63.1           48.8                8.5 +/-    0.54      10.9 +/-    0.54  0.040 / 0.040
G31     54.3           15.7                7.1 +/-    3.03      17.3 +/-    3.03  0.040 / 0.040