PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/26-06:43:10
G02     38.1           51.2                3.5 +/-    0.68       4.4 +/-    0.68  0.030 / 0.030
G05     129.8          64.8                6.2 +/-    0.41       6.7 +/-    0.41  0.030 / 0.030
G06     55.0           15.4                1.1 +/-    1.83       2.7 +/-    1.83  0.020 / 0.030
G12     198.8          65.5                3.9 +/-    0.70       4.2 +/-    0.70  0.030 / 0.030
G20     201.4          24.1                5.2 +/-    2.74      10.4 +/-    2.74  0.130 / 0.340
G25     293.2          54.5                4.7 +/-    2.09       5.6 +/-    2.09  0.240 / 0.260
G29     310.0          31.2                2.2 +/-    1.83       3.7 +/-    1.83  0.140 / 0.320