PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/15-22:12:40
G01     222.6          13.6                7.6 +/-    3.37      19.7 +/-    3.37  0.140 / 0.370
G03     273.6          69.7                6.3 +/-    1.11       6.7 +/-    1.11  0.150 / 0.670
G09     297.6          12.7                6.7 +/-   12.59      17.5 +/-   12.59  0.050 / 0.040
G14     91.1           20.5                7.4 +/-    1.96      16.1 +/-    1.96  0.050 / 0.030
G16     143.0          49.2                8.6 +/-    0.71      10.9 +/-    0.71  0.040 / 0.060
G22     208.0          66.3                7.5 +/-    0.54       8.1 +/-    0.54  0.040 / 0.050
G23     309.8          39.1                6.0 +/-    1.00       8.9 +/-    1.00  0.150 / 0.270
G26     91.9           55.5                6.7 +/-    1.28       7.9 +/-    1.28  0.120 / 0.200
G31     46.2           31.5                5.5 +/-    0.83       9.4 +/-    0.83  0.030 / 0.030