PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/30-03:58:00
G03     235.5          66.8                4.5 +/-    0.66       4.9 +/-    0.66  0.050 / 0.050
G09     307.0          25.8                2.7 +/-    1.54       5.2 +/-    1.54  0.050 / 0.050
G14     101.6          13.1                5.4 +/-    1.87      14.2 +/-    1.87  0.190 / 0.370
G16     118.2          60.7                4.9 +/-    0.32       5.6 +/-    0.32  0.160 / 0.450
G22     195.1          53.3                6.7 +/-    0.66       8.1 +/-    0.66  0.040 / 0.050
G23     320.3          50.1                3.7 +/-    0.72       4.6 +/-    0.72  0.040 / 0.050
G26     64.8           49.8                3.4 +/-    0.70       4.3 +/-    0.70  0.050 / 0.040
G31     53.7           17.5                1.7 +/-    3.60       4.0 +/-    3.60  0.040 / 0.040