PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/15-08:58:10
G08     320.2          10.8              -11.7 +/-   24.20     -32.2 +/-   24.20  0.110 / 0.210
G10     313.1          56.2                3.4 +/-    1.80       4.0 +/-    1.80  0.110 / 0.320
G14     214.0          18.0                4.9 +/-    2.17      11.4 +/-    2.17  0.060 / 0.030
G15     45.6           18.5                3.0 +/-    2.60       6.9 +/-    2.60  0.050 / 0.030
G20     66.5           35.7                4.5 +/-    2.11       7.0 +/-    2.11  0.080 / 0.050
G21     121.0          66.2                6.1 +/-    0.87       6.6 +/-    0.87  0.120 / 0.040
G24     86.1           29.5                6.4 +/-    0.94      11.4 +/-    0.94  0.080 / 0.080
G27     287.5          37.5                6.1 +/-    1.23       9.2 +/-    1.23  0.070 / 0.080
G32     215.7          43.7                5.7 +/-    0.94       7.9 +/-    0.94  0.040 / 0.030