PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/05-02:27:30
G02     65.6           27.2                5.1 +/-    0.68       9.5 +/-    0.68  0.060 / 0.070
G05     49.9           53.3                5.1 +/-    0.30       6.2 +/-    0.30  0.050 / 0.070
G12     184.7          27.5                8.8 +/-    1.43      16.3 +/-    1.43  0.060 / 0.130
G13     121.3          19.7               11.7 +/-    1.86      26.0 +/-    1.86  0.060 / 0.120
G15     158.8          18.7                9.5 +/-    1.64      21.6 +/-    1.64  0.080 / 0.240
G21     278.0          22.6                7.1 +/-    1.75      14.7 +/-    1.75  0.080 / 0.190
G25     226.6          46.5                7.6 +/-    0.91      10.0 +/-    0.91  0.080 / 0.130
G29     338.3          64.9                7.3 +/-    0.49       8.0 +/-    0.49  0.070 / 0.100