PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/23-01:57:50
G02     205.8          46.0               10.9 +/-    1.10      14.5 +/-    1.10  0.120 / 0.210
G06     139.4          77.3                8.3 +/-    0.59       8.5 +/-    0.59  0.070 / 0.170
G12     312.1          21.7                6.2 +/-    2.38      13.1 +/-    2.38  0.050 / 0.080
G17     41.7           45.3                4.9 +/-    0.40       6.6 +/-    0.40  0.050 / 0.090
G19     18.1           59.6                6.9 +/-    0.55       7.9 +/-    0.55  0.060 / 0.150
G24     287.4          41.2                7.0 +/-    1.17      10.0 +/-    1.17  0.060 / 0.190
G28     111.2          24.4                7.6 +/-    0.71      15.0 +/-    0.71  0.030 / 0.030