PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/25-08:57:50
G08     275.0          21.1                7.2 +/-    1.54      15.4 +/-    1.54  0.080 / 0.230
G10     47.6           60.2                5.3 +/-    0.85       6.0 +/-    0.85  0.100 / 0.210
G14     251.3          61.8                6.3 +/-    0.41       7.1 +/-    0.41  0.070 / 0.150
G18     315.3          26.9                2.0 +/-    1.49       3.8 +/-    1.49  0.130 / 0.150
G20     87.4           41.6                4.7 +/-    1.14       6.6 +/-    1.14  0.030 / 0.020
G21     152.9          21.7                5.9 +/-    1.19      12.6 +/-    1.19  0.030 / 0.030
G24     42.9           14.6                2.8 +/-    1.85       7.0 +/-    1.85  0.040 / 0.070
G27     239.4          21.7                7.7 +/-    2.35      16.2 +/-    2.35  0.050 / 0.060
G31     180.2          21.9                5.4 +/-    1.56      11.4 +/-    1.56  0.290 / 0.360
G32     288.0          74.0                5.7 +/-    0.47       5.9 +/-    0.47  0.220 / 0.410