PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/21-10:27:50
G08     272.5          18.0                4.9 +/-    1.75      11.4 +/-    1.75  0.100 / 0.350
G10     59.0           59.0                3.7 +/-    0.81       4.2 +/-    0.81  0.180 / 0.410
G11     313.3          15.1                1.3 +/-    1.49       3.2 +/-    1.49  0.050 / 0.050
G14     260.4          62.1                4.0 +/-    1.03       4.4 +/-    1.03  0.050 / 0.050
G18     313.3          30.0                3.8 +/-    1.10       6.6 +/-    1.10  0.300 / 0.150
G21     154.4          16.1                5.0 +/-    1.87      12.0 +/-    1.87  0.230 / 0.210
G24     40.1           10.8                3.0 +/-    3.38       8.1 +/-    3.38  0.190 / 0.290
G27     232.0          16.3                4.7 +/-    1.46      11.4 +/-    1.46  0.160 / 0.340
G31     177.1          31.0                5.7 +/-    2.16       9.8 +/-    2.16  0.120 / 0.270
G32     341.7          74.2                3.9 +/-    0.39       4.0 +/-    0.39  0.110 / 0.180