PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/31-17:58:10
G10     264.8          37.2                9.8 +/-    1.88      15.0 +/-    1.88  0.180 / 0.330
G13     42.8           19.6                6.7 +/-    0.78      14.9 +/-    0.78  0.130 / 0.350
G15     64.3           53.0                8.2 +/-    0.56      10.0 +/-    0.56  0.040 / 0.050
G16     281.3          12.8                9.3 +/-    1.36      24.3 +/-    1.36  0.040 / 0.050
G20     293.6          59.4                7.9 +/-    1.69       9.0 +/-    1.69  0.140 / 0.330
G21     1.8            71.1                7.5 +/-    0.95       7.9 +/-    0.95  0.130 / 0.390
G24     118.8          13.4               12.0 +/-    0.75      31.0 +/-    0.75  0.070 / 0.200
G27     320.3          15.7                6.4 +/-    3.56      15.7 +/-    3.56  0.070 / 0.240
G29     167.2          33.2               10.4 +/-    1.98      17.1 +/-    1.98  0.110 / 0.340