PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/25-15:27:50
G02     38.4           50.3                5.1 +/-    1.55       6.4 +/-    1.55  0.030 / 0.030
G05     129.4          67.3                8.0 +/-    0.66       8.6 +/-    0.66  0.030 / 0.030
G12     189.7          59.0                8.3 +/-    0.51       9.5 +/-    0.51  0.040 / 0.050
G25     285.3          56.6                4.3 +/-    1.94       5.0 +/-    1.94  0.050 / 0.060
G29     312.0          33.0                4.4 +/-    1.43       7.2 +/-    1.43  0.040 / 0.040