PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/23-12:57:40
G03     221.7          63.7                6.9 +/-    1.40       7.6 +/-    1.40  0.130 / 0.300
G07     251.8          10.5               -4.9 +/-   16.10     -13.6 +/-   16.10  0.120 / 0.250
G09     306.9          22.8                3.0 +/-    2.52       6.2 +/-    2.52  0.050 / 0.070
G14     103.2          14.4                7.1 +/-    2.03      18.0 +/-    2.03  0.040 / 0.070
G16     109.3          62.6                9.1 +/-    0.79      10.1 +/-    0.79  0.120 / 0.410
G22     187.5          46.2                7.9 +/-    2.02      10.4 +/-    2.02  0.100 / 0.380
G23     328.3          57.6                5.8 +/-    0.71       6.8 +/-    0.71  0.040 / 0.060
G26     59.0           46.5                6.1 +/-    0.71       8.0 +/-    0.71  0.040 / 0.050
G31     56.1           13.1                5.7 +/-    1.79      14.8 +/-    1.79  0.040 / 0.040