PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/17-17:12:50
G08     288.7          23.9                7.7 +/-    1.56      15.3 +/-    1.56  0.050 / 0.110
G10     14.2           62.9                6.2 +/-    0.64       6.9 +/-    0.64  0.050 / 0.110
G14     231.9          49.3               10.2 +/-    0.95      13.0 +/-    0.95  0.030 / 0.040
G18     317.5          14.8                5.2 +/-    2.18      13.0 +/-    2.18  0.030 / 0.030
G20     68.9           50.8                6.8 +/-    0.51       8.5 +/-    0.51  0.070 / 0.070
G21     147.2          34.7                8.7 +/-    1.12      13.9 +/-    1.12  0.060 / 0.080
G24     50.8           21.3                5.5 +/-    1.25      11.7 +/-    1.25  0.120 / 0.140
G27     254.7          30.6                8.3 +/-    1.93      14.4 +/-    1.93  0.100 / 0.120
G32     249.9          68.7                8.3 +/-    0.68       8.9 +/-    0.68  0.100 / 0.110