PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/11-15:12:50
G10     265.8          37.9                6.9 +/-    0.84      10.3 +/-    0.84  0.040 / 0.050
G13     42.4           18.9                4.9 +/-    0.73      11.0 +/-    0.73  0.040 / 0.040
G15     61.6           50.9                7.0 +/-    0.58       8.7 +/-    0.58  0.080 / 0.070
G16     281.8          12.4                5.1 +/-    1.26      13.6 +/-    1.26  0.060 / 0.080
G20     295.4          59.8                6.7 +/-    0.69       7.6 +/-    0.69  0.070 / 0.220
G21     9.4            72.2                7.2 +/-    0.67       7.6 +/-    0.67  0.070 / 0.220
G24     117.2          14.0               11.5 +/-    1.72      29.4 +/-    1.72  0.200 / 0.350
G27     320.2          15.8                2.3 +/-    2.46       5.7 +/-    2.46  0.200 / 0.360
G29     166.7          31.2               10.1 +/-    1.30      17.2 +/-    1.30  0.140 / 0.420