PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/07-03:57:40
G02     36.7           52.4                4.3 +/-    1.00       5.3 +/-    1.00  0.030 / 0.030
G05     131.3          64.2                6.0 +/-    0.64       6.6 +/-    0.64  0.030 / 0.030
G06     54.9           14.7                2.5 +/-    3.58       6.3 +/-    3.58  0.290 / 0.240
G12     198.3          66.1                4.6 +/-    0.49       4.9 +/-    0.49  0.170 / 0.180
G25     294.9          53.9                4.3 +/-    3.84       5.1 +/-    3.84  0.030 / 0.020
G29     308.8          29.4                3.8 +/-    1.19       6.7 +/-    1.19  0.030 / 0.030