PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/17-17:28:00
G02     202.5          28.1               10.9 +/-    1.95      19.8 +/-    1.95  0.090 / 0.100
G06     161.6          65.2               10.0 +/-    0.51      10.9 +/-    0.51  0.060 / 0.090
G12     305.8          14.5                8.2 +/-    2.70      20.7 +/-    2.70  0.040 / 0.030
G17     31.2           53.0               10.8 +/-    0.88      13.2 +/-    0.88  0.030 / 0.030
G19     341.1          68.5               10.5 +/-    0.74      11.2 +/-    0.74  0.110 / 0.290
G24     301.9          36.4               11.1 +/-    1.73      17.2 +/-    1.73  0.130 / 0.300
G28     97.5           34.4               11.2 +/-    1.05      18.0 +/-    1.05  0.030 / 0.030