PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/26-23:12:30
G02     52.0           39.3                8.3 +/-    0.67      12.2 +/-    0.67  0.130 / 0.500
G05     74.8           66.9                9.4 +/-    0.44      10.1 +/-    0.44  0.130 / 0.560
G12     184.8          40.7               12.7 +/-    0.96      18.3 +/-    0.96  0.030 / 0.040
G21     264.0          11.0                5.3 +/-   23.42      14.4 +/-   23.42  0.040 / 0.040
G25     252.5          56.8               11.1 +/-    0.42      13.0 +/-    0.42  0.030 / 0.110
G29     321.8          45.2                9.8 +/-    0.96      13.1 +/-    0.96  0.070 / 0.090