PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-02:27:40
G10     265.3          37.1                9.1 +/-    1.45      13.8 +/-    1.45  0.130 / 0.350
G13     42.7           19.5                6.7 +/-    2.42      14.9 +/-    2.42  0.200 / 0.420
G15     62.3           51.4                7.8 +/-    0.77       9.7 +/-    0.77  0.230 / 0.170
G16     279.3          12.7                9.0 +/-    1.60      23.5 +/-    1.60  0.160 / 0.150
G20     287.7          55.7                8.0 +/-    0.66       9.5 +/-    0.66  0.050 / 0.040
G21     356.8          70.4                8.1 +/-    0.76       8.5 +/-    0.76  0.050 / 0.040
G24     120.8          13.3                8.2 +/-    2.29      21.1 +/-    2.29  0.170 / 0.200
G27     319.3          17.6                7.2 +/-    5.48      16.9 +/-    5.48  0.130 / 0.350
G29     168.2          33.8                8.6 +/-    1.48      13.9 +/-    1.48  0.030 / 0.040