PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/09-06:57:50
G02     37.6           51.2                4.0 +/-    1.21       5.0 +/-    1.21  0.080 / 0.130
G05     130.0          65.4                7.4 +/-    0.82       8.1 +/-    0.82  0.090 / 0.180
G06     54.5           16.6                2.1 +/-    1.38       5.1 +/-    1.38  0.030 / 0.030
G12     198.1          64.9                6.8 +/-    0.54       7.4 +/-    0.54  0.030 / 0.030
G25     285.3          58.4                5.7 +/-    1.09       6.6 +/-    1.09  0.040 / 0.030
G29     312.3          34.5                2.2 +/-    1.42       3.6 +/-    1.42  0.030 / 0.030