PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/17-00:42:50
G02     200.7          26.0               12.1 +/-    1.88      23.1 +/-    1.88  0.060 / 0.090
G06     174.4          55.0               12.6 +/-    0.76      15.1 +/-    0.76  0.080 / 0.110
G17     28.8           54.8               10.3 +/-    1.10      12.3 +/-    1.10  0.060 / 0.080
G19     336.0          69.9                9.7 +/-    0.76      10.3 +/-    0.76  0.060 / 0.090
G24     305.2          34.3                7.9 +/-    1.84      12.7 +/-    1.84  0.050 / 0.030
G28     90.5           40.1               10.4 +/-    0.96      15.1 +/-    0.96  0.050 / 0.040
G30     157.4          10.0               11.2 +/-    3.65      31.2 +/-    3.65  0.040 / 0.030