PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-04:12:30
G02     24.3           63.1                3.9 +/-    1.08       4.3 +/-    1.08  0.030 / 0.030
G05     151.1          52.4                7.2 +/-    0.49       8.9 +/-    0.49  0.030 / 0.030
G06     47.9           25.5                3.4 +/-    2.12       6.6 +/-    2.12  0.110 / 0.140
G12     235.2          78.3                4.8 +/-    0.49       4.9 +/-    0.49  0.120 / 0.180
G19     90.7           17.0                4.6 +/-    1.60      10.9 +/-    1.60  0.030 / 0.050
G25     310.1          44.0                4.9 +/-    0.96       6.6 +/-    0.96  0.030 / 0.040
G29     299.4          20.2                3.5 +/-    1.10       7.6 +/-    1.10  0.030 / 0.040