PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/04-02:27:50
G02     43.8           46.0                6.3 +/-    0.50       8.3 +/-    0.50  0.050 / 0.040
G05     107.2          68.5                6.7 +/-    0.66       7.1 +/-    0.66  0.060 / 0.050
G12     190.5          55.3                9.1 +/-    0.83      10.9 +/-    0.83  0.030 / 0.030
G25     278.1          57.6                9.7 +/-    0.98      11.2 +/-    0.98  0.040 / 0.030
G29     314.6          36.0                8.8 +/-    1.05      13.8 +/-    1.05  0.040 / 0.070