PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-12:13:10
G01     219.9          10.6                5.9 +/-    1.27      16.3 +/-    1.27  0.110 / 0.170
G03     255.1          70.4                6.0 +/-    1.47       6.3 +/-    1.47  0.110 / 0.190
G09     299.8          13.9                3.1 +/-    9.52       8.0 +/-    9.52  0.160 / 0.400
G14     93.0           22.2                5.5 +/-    2.19      11.5 +/-    2.19  0.150 / 0.360
G16     133.3          54.6                7.7 +/-    0.46       9.2 +/-    0.46  0.030 / 0.040
G22     194.5          59.6                7.2 +/-    0.30       8.2 +/-    0.30  0.040 / 0.050
G23     317.2          47.6                5.5 +/-    1.07       7.2 +/-    1.07  0.040 / 0.110
G26     76.7           52.6                5.8 +/-    1.05       7.1 +/-    1.05  0.050 / 0.060
G31     49.9           22.4                4.1 +/-    1.77       8.6 +/-    1.77  0.040 / 0.030