PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/06-07:58:10
G02     55.3           35.7                1.8 +/-    0.59       2.8 +/-    0.59  0.030 / 0.070
G05     68.0           65.4                2.7 +/-    0.46       2.9 +/-    0.46  0.050 / 0.090
G12     187.3          40.7                5.9 +/-    0.95       8.5 +/-    0.95  0.030 / 0.040
G13     131.9          11.2                0.7 +/-   17.26       1.9 +/-   17.26  0.030 / 0.030
G21     268.9          18.4                4.2 +/-    1.47       9.6 +/-    1.47  0.110 / 0.270
G25     239.6          55.4                5.3 +/-    0.60       6.2 +/-    0.60  0.130 / 0.240
G29     327.8          52.6                1.5 +/-    0.86       1.8 +/-    0.86  0.040 / 0.050