PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/13-02:12:00
G02     51.1           39.5                9.4 +/-    2.01      13.8 +/-    2.01  0.040 / 0.060
G05     79.2           67.4               10.5 +/-    0.47      11.3 +/-    0.47  0.050 / 0.060
G12     187.0          44.6               12.6 +/-    0.66      17.1 +/-    0.66  0.020 / 0.030
G25     258.4          57.4               11.4 +/-    2.29      13.3 +/-    2.29  0.030 / 0.030
G29     320.6          43.6               11.2 +/-    1.21      15.4 +/-    1.21  0.040 / 0.050