PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/15-02:12:30
G02     346.5          78.9                7.8 +/-    0.40       7.9 +/-    0.40  0.030 / 0.010
G05     163.4          33.4                9.8 +/-    1.13      16.1 +/-    1.13  0.030 / 0.010
G06     41.3           41.4                7.9 +/-    0.99      11.3 +/-    0.99  0.050 / 0.030
G12     313.2          69.6                8.9 +/-    0.62       9.5 +/-    0.62  0.070 / 0.030
G17     83.5           15.8                8.9 +/-    2.01      21.6 +/-    2.01  0.160 / 0.090
G19     73.7           28.6                8.4 +/-    1.70      15.2 +/-    1.70  0.130 / 0.050
G24     229.4          23.5               11.1 +/-    2.40      22.5 +/-    2.40  0.190 / 0.130
G25     317.5          27.0                7.8 +/-    1.45      14.5 +/-    1.45  0.150 / 0.180