PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/07-15:57:50
G02     202.4          25.5               10.9 +/-    1.75      21.1 +/-    1.75  0.070 / 0.090
G06     162.8          63.4               11.6 +/-    0.46      12.9 +/-    0.46  0.120 / 0.090
G12     305.0          14.0                8.1 +/-    1.96      20.5 +/-    1.96  0.060 / 0.230
G17     30.5           53.5               10.3 +/-    0.98      12.5 +/-    0.98  0.080 / 0.240
G19     334.2          69.2                9.5 +/-    0.46      10.1 +/-    0.46  0.040 / 0.030
G24     303.4          35.6               10.2 +/-    2.01      16.0 +/-    2.01  0.040 / 0.030
G28     95.5           35.6               10.9 +/-    0.95      17.0 +/-    0.95  0.040 / 0.040