PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-04:58:00
G10     270.5          40.1                8.9 +/-    0.88      12.9 +/-    0.88  0.110 / 0.420
G13     40.6           15.9                4.8 +/-    2.77      11.7 +/-    2.77  0.110 / 0.590
G15     56.2           46.5                4.8 +/-    0.77       6.3 +/-    0.77  0.040 / 0.050
G16     275.1          10.9                6.9 +/-    4.12      18.9 +/-    4.12  0.040 / 0.040
G20     339.7          67.8                5.6 +/-    0.94       6.0 +/-    0.94  0.080 / 0.180
G21     9.7            73.6                6.3 +/-    0.53       6.5 +/-    0.53  0.070 / 0.170
G24     117.3          16.1                5.9 +/-    2.34      14.3 +/-    2.34  0.060 / 0.070
G27     316.9          21.6                3.0 +/-    2.76       6.3 +/-    2.76  0.050 / 0.080
G29     168.6          28.4                6.4 +/-    1.41      11.5 +/-    1.41  0.190 / 0.480
G32     204.4          13.7                7.2 +/-    1.66      18.6 +/-    1.66  0.190 / 0.460