PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/29-04:57:30
G02     45.4           44.4                4.5 +/-    0.48       6.1 +/-    0.48  0.040 / 0.050
G05     103.3          68.7                6.1 +/-    0.42       6.5 +/-    0.42  0.030 / 0.070
G12     191.2          54.7                7.3 +/-    1.06       8.7 +/-    1.06  0.030 / 0.040
G20     207.1          22.5                5.0 +/-    2.33      10.3 +/-    2.33  0.030 / 0.040
G25     275.9          57.8                5.1 +/-    1.06       6.0 +/-    1.06  0.070 / 0.240
G29     315.9          37.7                3.9 +/-    1.14       5.9 +/-    1.14  0.070 / 0.260