PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/13-21:43:00
G03     228.1          66.0               12.3 +/-    0.70      13.4 +/-    0.70  0.050 / 0.070
G09     304.9          19.6               10.9 +/-    1.31      24.3 +/-    1.31  0.060 / 0.060
G14     102.1          12.8               12.3 +/-    2.18      32.2 +/-    2.18  0.030 / 0.050
G16     125.7          61.0               14.3 +/-    0.64      16.1 +/-    0.64  0.050 / 0.060
G22     193.0          52.4               16.6 +/-    0.71      20.4 +/-    0.71  0.080 / 0.110
G23     321.7          51.5               11.6 +/-    1.07      14.3 +/-    1.07  0.070 / 0.130
G26     65.5           50.7                9.3 +/-    0.32      11.6 +/-    0.32  0.130 / 0.520
G31     53.6           17.9                7.8 +/-    0.83      18.1 +/-    0.83  0.170 / 0.520