PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/13-19:58:00
G01     252.1          35.7                9.8 +/-    1.58      15.3 +/-    1.58  0.040 / 0.050
G03     316.0          44.2                9.3 +/-    2.95      12.7 +/-    2.95  0.030 / 0.050
G11     239.3          13.2               11.2 +/-    3.53      29.1 +/-    3.53  0.130 / 0.330
G14     59.1           41.7               10.1 +/-    1.32      14.3 +/-    1.32  0.120 / 0.330
G22     305.6          65.5               10.6 +/-    1.52      11.5 +/-    1.52  0.050 / 0.100
G23     286.1          19.0               10.4 +/-    0.86      23.4 +/-    0.86  0.060 / 0.100
G25     40.5           10.8                9.3 +/-    1.37      25.6 +/-    1.37  0.030 / 0.050
G26     137.8          37.1               12.5 +/-    0.99      19.1 +/-    0.99  0.030 / 0.040
G31     40.9           59.9                9.9 +/-    0.38      11.2 +/-    0.38  0.060 / 0.110
G32     76.7           23.4               10.0 +/-    0.99      20.2 +/-    0.99  0.050 / 0.090