PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-02:27:40
G02     53.9           37.0                7.6 +/-    0.53      11.6 +/-    0.53  0.060 / 0.050
G05     70.6           65.5                9.3 +/-    0.65      10.1 +/-    0.65  0.100 / 0.060
G12     186.3          40.8               12.3 +/-    2.28      17.7 +/-    2.28  0.070 / 0.080
G13     134.3          10.0               -6.9 +/-   11.40     -19.3 +/-   11.40  0.070 / 0.080
G20     215.3          11.4               -2.2 +/-   23.17      -6.1 +/-   23.17  0.030 / 0.040
G21     265.0          12.2               10.0 +/-    3.57      26.4 +/-    3.57  0.030 / 0.040
G25     251.5          56.3                9.9 +/-    0.69      11.6 +/-    0.69  0.050 / 0.050
G29     322.9          46.7                9.4 +/-    0.99      12.3 +/-    0.99  0.040 / 0.050