PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-08:27:50
G08     267.9          17.0                7.7 +/-    2.37      18.3 +/-    2.37  0.140 / 0.400
G10     65.0           57.6                3.1 +/-    0.63       3.6 +/-    0.63  0.090 / 0.400
G11     310.8          17.6                3.1 +/-    3.34       7.2 +/-    3.34  0.050 / 0.080
G14     265.3          63.3                4.1 +/-    1.06       4.6 +/-    1.06  0.040 / 0.080
G18     311.6          32.8                3.0 +/-    2.36       5.0 +/-    2.36  0.190 / 0.310
G20     103.6          19.3                4.6 +/-    1.17      10.3 +/-    1.17  0.210 / 0.260
G21     155.1          13.7                4.7 +/-    3.48      12.1 +/-    3.48  0.050 / 0.040
G27     229.9          14.3                6.8 +/-    2.46      17.3 +/-    2.46  0.030 / 0.030
G31     176.2          34.5                4.6 +/-    1.21       7.4 +/-    1.21  0.130 / 0.190
G32     352.2          72.4                5.3 +/-    0.76       5.5 +/-    0.76  0.110 / 0.240