PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/15-15:57:50
G02     33.3           54.5                7.1 +/-    0.55       8.5 +/-    0.55  0.040 / 0.050
G05     138.8          63.7                9.5 +/-    0.78      10.5 +/-    0.78  0.050 / 0.070
G06     55.1           12.7                5.0 +/-    1.77      13.1 +/-    1.77  0.050 / 0.040
G12     193.8          64.8                5.8 +/-    2.02       6.3 +/-    2.02  0.050 / 0.040
G25     293.8          54.3                5.7 +/-    1.20       6.9 +/-    1.20  0.030 / 0.040
G29     308.7          29.4                6.0 +/-    3.11      10.6 +/-    3.11  0.060 / 0.040