PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/02-09:42:50
G08     271.9          18.1                5.6 +/-    1.38      13.0 +/-    1.38  0.050 / 0.060
G10     59.1           58.9                4.5 +/-    0.69       5.2 +/-    0.69  0.050 / 0.070
G14     259.9          61.7                4.6 +/-    0.46       5.2 +/-    0.46  0.110 / 0.210
G18     313.2          30.0                6.4 +/-    1.64      11.2 +/-    1.64  0.100 / 0.190
G20     104.6          11.4                4.3 +/-    1.36      11.6 +/-    1.36  0.080 / 0.490
G21     154.5          16.3                3.2 +/-    1.15       7.6 +/-    1.15  0.080 / 0.400
G24     40.0           10.7                4.3 +/-    1.82      11.9 +/-    1.82  0.020 / 0.030
G27     232.1          16.4                5.7 +/-    2.15      13.6 +/-    2.15  0.030 / 0.030
G31     177.0          31.1                5.1 +/-    2.21       8.7 +/-    2.21  0.130 / 0.320
G32     342.1          74.2                6.6 +/-    0.58       6.8 +/-    0.58  0.150 / 0.290