PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-13:43:10
G03     217.1          65.0               10.1 +/-    0.72      11.1 +/-    0.72  0.060 / 0.050
G07     251.5          14.8                5.3 +/-    2.14      13.3 +/-    2.14  0.040 / 0.050
G09     304.8          19.5                6.9 +/-    1.43      15.3 +/-    1.43  0.070 / 0.380
G14     102.3          11.6                9.0 +/-    1.59      24.3 +/-    1.59  0.090 / 0.240
G16     126.9          60.3               11.1 +/-    0.97      12.6 +/-    0.97  0.050 / 0.060
G22     188.6          48.6               10.1 +/-    1.26      13.0 +/-    1.26  0.040 / 0.050
G23     322.3          52.2                8.0 +/-    0.87       9.8 +/-    0.87  0.140 / 0.310
G26     66.9           51.6                7.5 +/-    0.96       9.3 +/-    0.96  0.130 / 0.280
G31     54.0           17.3                6.7 +/-    1.93      15.8 +/-    1.93  0.040 / 0.030