PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/23-01:57:30
G02     205.8          46.0               10.8 +/-    0.66      14.3 +/-    0.66  0.200 / 0.200
G06     139.4          77.3                9.2 +/-    0.91       9.4 +/-    0.91  0.100 / 0.120
G12     312.1          21.7                5.5 +/-    1.44      11.6 +/-    1.44  0.090 / 0.160
G17     41.7           45.3                7.1 +/-    0.82       9.6 +/-    0.82  0.080 / 0.160
G19     18.1           59.6                6.7 +/-    0.79       7.7 +/-    0.79  0.040 / 0.060
G24     287.4          41.2                7.3 +/-    5.49      10.4 +/-    5.49  0.030 / 0.050
G28     111.2          24.4                8.4 +/-    1.46      16.7 +/-    1.46  0.050 / 0.050