PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/25-02:43:10
G02     56.8           34.3                5.0 +/-    2.00       8.0 +/-    2.00  0.250 / 0.490
G05     62.9           63.0                4.7 +/-    0.51       5.2 +/-    0.51  0.330 / 0.540
G12     187.2          39.2                8.8 +/-    1.44      12.9 +/-    1.44  0.060 / 0.070
G13     130.2          12.4                7.1 +/-    1.47      18.8 +/-    1.47  0.090 / 0.060
G21     269.0          16.2                6.7 +/-    2.05      16.1 +/-    2.05  0.050 / 0.090
G25     241.5          54.5                6.8 +/-    0.97       8.1 +/-    0.97  0.050 / 0.070
G29     329.6          54.7                6.5 +/-    0.51       7.8 +/-    0.51  0.290 / 0.400