PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/19-04:13:00
G01     91.3           31.4                6.0 +/-    0.75      10.2 +/-    0.75  0.040 / 0.050
G07     125.0          43.9                6.5 +/-    0.76       8.8 +/-    0.76  0.030 / 0.050
G11     67.8           39.3               -3.7 +/-    1.30      -5.5 +/-    1.30  0.040 / 0.050
G13     295.3          36.2                5.3 +/-    2.53       8.2 +/-    2.53  0.040 / 0.050
G17     212.7          55.5                7.4 +/-    0.85       8.8 +/-    0.85  0.080 / 0.090
G19     214.0          24.2                6.2 +/-    1.43      12.4 +/-    1.43  0.080 / 0.120
G28     342.2          61.8                3.5 +/-    0.46       4.0 +/-    0.46  0.020 / 0.020
G30     97.2           78.1                4.7 +/-    0.57       4.7 +/-    0.57  0.030 / 0.020