PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/19-11:57:30
G02     201.6          23.6                5.4 +/-    3.33      10.8 +/-    3.33  0.130 / 0.260
G06     165.8          59.9                7.8 +/-    1.22       8.8 +/-    1.22  0.220 / 0.260
G13     222.4          10.2                5.8 +/-    1.97      16.2 +/-    1.97  0.090 / 0.110
G17     24.6           57.6                5.2 +/-    0.47       6.0 +/-    0.47  0.090 / 0.110
G19     343.9          69.6                5.6 +/-    0.70       5.9 +/-    0.70  0.030 / 0.040
G24     307.0          31.7                6.6 +/-    2.10      11.1 +/-    2.10  0.030 / 0.040
G28     88.3           42.9                4.8 +/-    0.59       6.6 +/-    0.59  0.180 / 0.600
G30     158.1          11.5                3.7 +/-    1.75      10.0 +/-    1.75  0.370 / 0.670