PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/15-09:27:30
G02     35.1           54.0                3.5 +/-    1.06       4.2 +/-    1.06  0.030 / 0.020
G05     138.8          61.9                6.6 +/-    0.60       7.3 +/-    0.60  0.020 / 0.030
G06     52.4           19.9                2.5 +/-    3.33       5.4 +/-    3.33  0.350 / 0.170
G12     204.4          69.4                6.2 +/-    0.57       6.6 +/-    0.57  0.280 / 0.240
G19     100.1          9.4                 6.0 +/-    5.83      17.0 +/-    5.83  0.020 / 0.030
G20     200.1          22.4                3.5 +/-    2.23       7.3 +/-    2.23  0.020 / 0.030
G25     298.0          52.8                3.9 +/-    1.99       4.8 +/-    1.99  0.040 / 0.050
G29     308.3          29.9                2.5 +/-    1.14       4.4 +/-    1.14  0.050 / 0.060