PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/08-13:42:50
G02     202.9          21.5                7.6 +/-    1.46      16.2 +/-    1.46  0.240 / 0.560
G06     165.8          60.9               10.4 +/-    0.63      11.8 +/-    0.63  0.300 / 0.560
G12     303.8          12.3                5.2 +/-    3.91      13.8 +/-    3.91  0.340 / 0.390
G17     29.2           54.5                7.7 +/-    0.88       9.2 +/-    0.88  0.140 / 0.260
G19     325.0          69.5                7.1 +/-    1.01       7.5 +/-    1.01  0.070 / 0.100
G24     304.3          35.2                6.0 +/-    1.89       9.5 +/-    1.89  0.070 / 0.090
G28     93.4           37.2                9.7 +/-    0.69      14.7 +/-    0.69  0.040 / 0.030
G30     158.2          10.9                9.3 +/-    3.96      25.6 +/-    3.96  0.030 / 0.040