PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/15-15:12:40
G10     248.0          23.8               10.0 +/-    1.41      20.1 +/-    1.41  0.230 / 0.290
G13     57.4           32.5                7.3 +/-    0.82      12.1 +/-    0.82  0.310 / 0.460
G15     90.1           57.0               10.7 +/-    0.93      12.5 +/-    0.93  0.050 / 0.090
G16     302.8          13.7                5.6 +/-    2.04      14.2 +/-    2.04  0.080 / 0.100
G18     266.5          55.9                9.5 +/-    1.93      11.2 +/-    1.93  0.150 / 0.330
G20     38.2           53.9                8.4 +/-    0.75      10.1 +/-    0.75  0.120 / 0.340
G21     338.2          62.1               10.1 +/-    0.78      11.2 +/-    0.78  0.060 / 0.130
G26     273.2          16.4               10.1 +/-    2.47      24.3 +/-    2.47  0.050 / 0.110
G29     161.8          49.0               12.3 +/-    0.47      15.7 +/-    0.47  0.030 / 0.050