PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/30-15:57:40
G10     302.0          53.0                6.5 +/-    0.86       7.9 +/-    0.86  0.090 / 0.130
G14     211.4          14.9                8.8 +/-    3.45      21.9 +/-    3.45  0.090 / 0.120
G15     45.5           23.6                5.0 +/-    2.80      10.1 +/-    2.80  0.070 / 0.030
G18     11.4           64.7                6.0 +/-    0.96       6.6 +/-    0.96  0.040 / 0.030
G20     72.8           18.6                6.3 +/-    1.57      14.2 +/-    1.57  0.090 / 0.080
G21     111.7          67.1                7.5 +/-    0.82       8.0 +/-    0.82  0.050 / 0.070
G24     94.9           27.9                7.2 +/-    1.46      13.2 +/-    1.46  0.100 / 0.210
G27     295.1          36.3                8.2 +/-    3.03      12.7 +/-    3.03  0.090 / 0.210
G32     212.5          35.1               10.1 +/-    2.07      16.0 +/-    2.07  0.190 / 0.180