PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/12-13:28:10
G02     212.6          52.2                7.1 +/-    0.68       8.7 +/-    0.68  0.050 / 0.070
G06     75.4           77.4                5.7 +/-    0.35       5.9 +/-    0.35  0.050 / 0.060
G12     316.2          31.5                5.6 +/-    1.30       9.5 +/-    1.30  0.050 / 0.050
G17     50.7           37.7                5.9 +/-    1.69       8.9 +/-    1.69  0.040 / 0.050
G19     34.4           51.4                6.2 +/-    2.04       7.7 +/-    2.04  0.030 / 0.040
G24     274.4          41.7                6.8 +/-    2.69       9.7 +/-    2.69  0.060 / 0.040
G28     116.3          24.1                7.2 +/-    1.06      14.3 +/-    1.06  0.050 / 0.050