PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-02:27:20
G02     48.2           42.0                6.2 +/-    0.52       8.8 +/-    0.52  0.040 / 0.060
G05     90.1           68.5                7.7 +/-    0.42       8.2 +/-    0.42  0.040 / 0.060
G12     188.3          49.0               10.1 +/-    1.90      12.9 +/-    1.90  0.030 / 0.050
G25     266.5          58.0                9.1 +/-    0.95      10.5 +/-    0.95  0.020 / 0.040
G29     318.2          40.4               10.1 +/-    2.10      14.6 +/-    2.10  0.060 / 0.070