PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/24-16:57:50
G02     47.4           43.8                9.5 +/-    0.78      13.0 +/-    0.78  0.040 / 0.060
G05     92.5           70.8                9.3 +/-    0.45       9.8 +/-    0.45  0.040 / 0.060
G12     184.8          43.5                9.4 +/-    1.52      12.9 +/-    1.52  0.050 / 0.080
G25     253.4          58.3                8.5 +/-    0.60       9.8 +/-    0.60  0.060 / 0.080
G29     320.3          43.1                8.3 +/-    1.23      11.5 +/-    1.23  0.030 / 0.030