PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/05-15:13:10
G01     230.5          20.8               14.6 +/-    0.99      31.5 +/-    0.99  0.080 / 0.140
G03     293.9          67.4               10.4 +/-    0.47      11.2 +/-    0.47  0.070 / 0.160
G14     80.4           30.1                7.4 +/-    0.89      13.0 +/-    0.89  0.110 / 0.110
G16     150.0          40.4               10.1 +/-    0.70      14.6 +/-    0.70  0.070 / 0.110
G18     207.4          11.1               10.8 +/-    2.69      29.5 +/-    2.69  0.080 / 0.190
G22     216.6          73.5               10.6 +/-    0.41      11.0 +/-    0.41  0.340 / 0.220
G23     305.4          36.7                9.5 +/-    1.46      14.6 +/-    1.46  0.030 / 0.040
G26     104.4          52.6                9.6 +/-    0.61      11.7 +/-    0.61  0.030 / 0.040
G31     43.8           35.2                7.3 +/-    1.11      11.6 +/-    1.11  0.070 / 0.090