PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/29-07:42:40
G08     274.8          19.7                7.9 +/-    1.03      17.5 +/-    1.03  0.050 / 0.070
G10     50.8           60.4                4.1 +/-    0.39       4.6 +/-    0.39  0.040 / 0.070
G14     252.4          58.6                8.3 +/-    0.76       9.5 +/-    0.76  0.080 / 0.190
G18     315.0          26.5                3.9 +/-    1.25       7.4 +/-    1.25  0.120 / 0.220
G20     96.2           27.9                4.5 +/-    1.13       8.2 +/-    1.13  0.090 / 0.190
G21     153.8          20.9                6.0 +/-    1.41      12.9 +/-    1.41  0.130 / 0.230
G24     41.8           13.4                0.3 +/-    0.69       0.9 +/-    0.69  0.030 / 0.030
G27     235.6          19.3                8.8 +/-    1.24      19.6 +/-    1.24  0.030 / 0.040
G31     177.8          26.8                5.8 +/-    1.72      10.8 +/-    1.72  0.090 / 0.270
G32     326.3          76.1                6.6 +/-    0.60       6.8 +/-    0.60  0.090 / 0.220