PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/28-03:57:40
G02     42.4           46.8                5.0 +/-    0.98       6.6 +/-    0.98  0.030 / 0.040
G05     112.7          68.3                8.1 +/-    0.31       8.7 +/-    0.31  0.030 / 0.040
G06     57.8           12.3                3.7 +/-    0.97       9.7 +/-    0.97  0.040 / 0.040
G12     194.3          59.2                8.3 +/-    0.56       9.5 +/-    0.56  0.040 / 0.050
G25     276.8          58.9                9.5 +/-    0.90      10.9 +/-    0.90  0.030 / 0.030
G29     317.3          40.5                4.7 +/-    1.07       6.8 +/-    1.07  0.020 / 0.030