PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/30-09:27:40
G02     202.7          34.1                6.5 +/-    1.02      10.4 +/-    1.02  0.120 / 0.210
G06     157.7          68.5                7.1 +/-    0.67       7.5 +/-    0.67  0.230 / 0.190
G12     307.1          17.0                4.1 +/-    2.17       9.6 +/-    2.17  0.050 / 0.100
G17     34.5           50.2                4.8 +/-    0.90       6.0 +/-    0.90  0.050 / 0.090
G19     4.0            64.9                5.1 +/-    0.73       5.6 +/-    0.73  0.130 / 0.090
G24     299.8          36.3                5.7 +/-    2.91       8.8 +/-    2.91  0.110 / 0.100
G28     97.0           38.8                6.7 +/-    0.87       9.9 +/-    0.87  0.040 / 0.050