PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/15-10:27:50
G08     284.0          20.7                6.7 +/-    2.65      14.4 +/-    2.65  0.070 / 0.070
G10     36.2           62.2                3.0 +/-    0.98       3.4 +/-    0.98  0.070 / 0.090
G14     243.3          54.1                5.7 +/-    2.27       6.9 +/-    2.27  0.150 / 0.060
G18     316.8          20.3                3.6 +/-    2.27       7.9 +/-    2.27  0.120 / 0.090
G20     99.3           10.3                4.9 +/-    2.19      13.7 +/-    2.19  0.130 / 0.190
G21     151.7          26.9                4.4 +/-    1.52       8.2 +/-    1.52  0.160 / 0.210
G24     45.9           18.5                3.4 +/-    3.42       7.8 +/-    3.42  0.260 / 0.390
G27     240.9          23.7                6.1 +/-    1.36      12.4 +/-    1.36  0.250 / 0.440
G31     179.6          19.8                4.0 +/-    1.25       8.8 +/-    1.25  0.080 / 0.150
G32     293.3          76.5                5.6 +/-    0.60       5.7 +/-    0.60  0.090 / 0.140