PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/17-06:27:50
G02     204.4          44.0                6.8 +/-    0.74       9.3 +/-    0.74  0.100 / 0.150
G06     143.8          75.1                4.9 +/-    0.91       5.1 +/-    0.91  0.100 / 0.180
G12     310.7          21.9                4.0 +/-    1.75       8.5 +/-    1.75  0.040 / 0.040
G17     42.3           43.6                3.6 +/-    1.51       5.0 +/-    1.51  0.040 / 0.030
G19     17.5           59.9                3.5 +/-    0.77       4.0 +/-    0.77  0.070 / 0.110
G24     291.2          39.7                4.6 +/-    2.23       6.8 +/-    2.23  0.060 / 0.120
G28     104.2          34.8                7.6 +/-    0.84      12.1 +/-    0.84  0.060 / 0.060