PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/16-22:42:30
G02     201.3          29.0               11.7 +/-    1.88      20.9 +/-    1.88  0.070 / 0.110
G06     170.8          59.9               11.3 +/-    0.45      12.9 +/-    0.45  0.060 / 0.090
G17     30.9           53.1               10.0 +/-    0.81      12.2 +/-    0.81  0.050 / 0.090
G19     346.6          68.6                9.0 +/-    0.57       9.5 +/-    0.57  0.070 / 0.090
G24     302.9          35.6                9.1 +/-    1.74      14.2 +/-    1.74  0.040 / 0.040
G28     93.6           38.7               11.3 +/-    1.54      16.8 +/-    1.54  0.040 / 0.030