PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/01-04:28:00
G01     88.7           30.7                6.2 +/-    0.57      10.6 +/-    0.57  0.030 / 0.020
G07     124.2          46.5                6.8 +/-    0.98       9.0 +/-    0.98  0.030 / 0.020
G11     72.9           43.6                5.8 +/-    0.88       8.0 +/-    0.88  0.100 / 0.210
G13     294.6          37.2                9.1 +/-    2.70      13.9 +/-    2.70  0.200 / 0.280
G15     314.0          11.2                0.2 +/-   13.84       0.7 +/-   13.84  0.040 / 0.050
G17     212.1          53.1                8.1 +/-    0.79       9.8 +/-    0.79  0.040 / 0.040
G19     212.8          28.5                7.1 +/-    1.73      12.8 +/-    1.73  0.060 / 0.040
G28     328.3          60.5                4.8 +/-    0.58       5.4 +/-    0.58  0.060 / 0.050
G30     88.7           80.5                6.4 +/-    0.60       6.5 +/-    0.60  0.040 / 0.090