PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-04:12:50
G08     280.8          22.1               10.0 +/-    1.26      20.9 +/-    1.26  0.080 / 0.130
G10     34.2           62.2                7.7 +/-    0.42       8.5 +/-    0.42  0.070 / 0.180
G14     242.1          54.2                9.5 +/-    1.61      11.5 +/-    1.61  0.050 / 0.080
G18     316.9          20.0                7.1 +/-    1.71      15.7 +/-    1.71  0.040 / 0.080
G20     67.2           56.9               14.1 +/-    0.57      16.5 +/-    0.57  0.060 / 0.130
G21     151.7          29.2                8.1 +/-    1.58      14.5 +/-    1.58  0.080 / 0.110
G24     45.9           18.2                6.2 +/-    0.86      14.1 +/-    0.86  0.070 / 0.130
G27     242.6          24.7               10.4 +/-    1.84      20.4 +/-    1.84  0.070 / 0.160
G31     179.6          18.9                8.6 +/-    1.81      19.5 +/-    1.81  0.030 / 0.030
G32     289.0          76.5                7.1 +/-    0.64       7.3 +/-    0.64  0.030 / 0.030