PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/18-12:58:10
G02     202.4          20.9                4.9 +/-    1.84      10.5 +/-    1.84  0.070 / 0.100
G06     167.0          59.3                7.2 +/-    0.68       8.3 +/-    0.68  0.100 / 0.110
G12     302.8          10.9               -6.7 +/-    6.81     -18.3 +/-    6.81  0.160 / 0.220
G13     224.0          10.4                3.4 +/-   12.95       9.5 +/-   12.95  0.130 / 0.180
G17     28.1           55.4                4.5 +/-    0.76       5.3 +/-    0.76  0.170 / 0.240
G19     320.4          69.7                5.5 +/-    0.48       5.9 +/-    0.48  0.320 / 0.720
G24     305.3          34.5                3.9 +/-    2.07       6.3 +/-    2.07  0.380 / 0.480
G28     91.8           38.1                6.3 +/-    1.11       9.5 +/-    1.11  0.050 / 0.030
G30     158.1          12.2                4.5 +/-    1.79      11.8 +/-    1.79  0.050 / 0.030