PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/19-08:27:50
G08     273.4          19.0                5.0 +/-    1.50      11.3 +/-    1.50  0.100 / 0.360
G10     54.4           59.8                3.4 +/-    0.78       3.8 +/-    0.78  0.110 / 0.320
G14     255.0          59.4                2.2 +/-    0.66       2.5 +/-    0.66  0.050 / 0.070
G18     314.3          28.0                4.8 +/-    3.02       8.8 +/-    3.02  0.040 / 0.060
G20     99.8           21.5                5.2 +/-    1.73      10.9 +/-    1.73  0.080 / 0.210
G21     154.2          19.0                4.0 +/-    2.94       9.1 +/-    2.94  0.090 / 0.200
G24     41.0           12.2                1.8 +/-    1.83       4.8 +/-    1.83  0.030 / 0.030
G27     234.1          18.0                6.7 +/-    2.41      15.5 +/-    2.41  0.030 / 0.030
G31     177.4          28.7                4.2 +/-    1.17       7.5 +/-    1.17  0.100 / 0.300
G32     333.6          75.4                5.2 +/-    0.60       5.4 +/-    0.60  0.130 / 0.260