PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/14-16:57:50
G10     298.2          51.8                8.4 +/-    0.75      10.3 +/-    0.75  0.090 / 0.090
G14     210.6          13.0                9.2 +/-    3.11      24.1 +/-    3.11  0.060 / 0.080
G15     45.8           25.9                6.8 +/-    1.08      12.9 +/-    1.08  0.080 / 0.080
G18     5.4            65.4                6.0 +/-    0.85       6.5 +/-    0.85  0.050 / 0.100
G20     71.3           19.6                6.3 +/-    1.09      14.0 +/-    1.09  0.040 / 0.050
G24     97.7           27.0               10.5 +/-    0.54      19.5 +/-    0.54  0.030 / 0.040
G27     297.9          35.4                7.8 +/-    0.97      12.3 +/-    0.97  0.100 / 0.230
G32     211.5          32.2                8.3 +/-    2.57      13.8 +/-    2.57  0.090 / 0.230