PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/23-15:27:50
G02     35.0           53.2                7.0 +/-    0.59       8.5 +/-    0.59  0.030 / 0.040
G05     137.3          64.6                9.8 +/-    0.63      10.7 +/-    0.63  0.040 / 0.050
G06     55.8           11.8                5.9 +/-    2.24      15.9 +/-    2.24  0.030 / 0.050
G12     192.2          63.2                7.8 +/-    1.14       8.6 +/-    1.14  0.030 / 0.050
G25     291.7          54.9                7.0 +/-    0.56       8.3 +/-    0.56  0.040 / 0.070
G29     309.5          30.2                7.9 +/-    1.31      13.7 +/-    1.31  0.040 / 0.070