PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/25-09:12:30
G02     44.7           45.1                3.9 +/-    0.47       5.2 +/-    0.47  0.030 / 0.020
G05     109.8          68.7                5.9 +/-    0.43       6.3 +/-    0.43  0.030 / 0.030
G06     59.2           11.0                4.3 +/-    1.53      11.7 +/-    1.53  0.020 / 0.040
G12     193.1          56.7                6.8 +/-    1.18       8.0 +/-    1.18  0.030 / 0.040
G20     202.3          33.6                6.7 +/-    1.79      10.9 +/-    1.79  0.050 / 0.050
G25     277.8          57.8                5.8 +/-    1.11       6.7 +/-    1.11  0.040 / 0.040
G29     316.2          38.5                3.9 +/-    0.94       5.8 +/-    0.94  0.100 / 0.130