PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-02:27:50
G02     56.9           34.2                4.7 +/-    2.08       7.6 +/-    2.08  0.060 / 0.070
G05     62.6           62.9                4.6 +/-    0.54       5.2 +/-    0.54  0.070 / 0.060
G12     187.1          39.0               10.2 +/-    1.50      15.1 +/-    1.50  0.280 / 0.580
G13     130.0          12.5                8.3 +/-    1.70      22.0 +/-    1.70  0.160 / 0.450
G15     164.8          10.2               -8.1 +/-   10.79     -22.4 +/-   10.79  0.080 / 0.070
G21     269.1          16.1                6.1 +/-    2.56      14.8 +/-    2.56  0.050 / 0.080
G25     241.4          54.4                7.5 +/-    2.42       9.0 +/-    2.42  0.030 / 0.030
G29     329.6          54.7                7.0 +/-    0.56       8.4 +/-    0.56  0.030 / 0.040