PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/20-11:27:50
G08     304.8          19.6                3.5 +/-    0.92       7.7 +/-    0.92  0.050 / 0.120
G10     349.5          62.1                3.5 +/-    0.46       3.9 +/-    0.46  0.070 / 0.110
G14     223.8          36.7                5.2 +/-    1.89       7.9 +/-    1.89  0.050 / 0.090
G20     88.5           10.9                3.5 +/-    3.42       9.7 +/-    3.42  0.070 / 0.080
G21     141.6          47.1                5.1 +/-    0.28       6.7 +/-    0.28  0.200 / 0.260
G24     64.3           28.7                2.5 +/-    1.69       4.4 +/-    1.69  0.270 / 0.300
G27     262.4          35.0                7.8 +/-    2.09      12.4 +/-    2.09  0.050 / 0.060
G32     233.6          62.2                6.5 +/-    1.30       7.2 +/-    1.30  0.050 / 0.050