PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/15-01:57:40
G03     235.4          67.3                5.1 +/-    0.42       5.5 +/-    0.42  0.060 / 0.040
G09     305.4          22.0                3.9 +/-    1.13       8.2 +/-    1.13  0.060 / 0.050
G14     100.1          15.8                4.4 +/-    1.54      10.7 +/-    1.54  0.140 / 0.390
G16     117.6          60.0                6.1 +/-    0.47       6.9 +/-    0.47  0.160 / 0.340
G22     196.8          53.7                7.1 +/-    1.55       8.6 +/-    1.55  0.090 / 0.170
G23     321.9          51.9                5.2 +/-    0.67       6.4 +/-    0.67  0.210 / 0.220
G26     65.2           49.7                3.0 +/-    0.99       3.8 +/-    0.99  0.030 / 0.030
G31     54.0           16.5                2.7 +/-    1.80       6.5 +/-    1.80  0.030 / 0.030