PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/18-04:13:10
G08     275.0          20.8                8.2 +/-    1.33      17.7 +/-    1.33  0.070 / 0.150
G10     46.1           61.0                6.6 +/-    0.47       7.4 +/-    0.47  0.090 / 0.130
G14     249.9          58.7                9.4 +/-    0.40      10.8 +/-    0.40  0.040 / 0.060
G18     315.6          24.9                6.2 +/-    1.20      12.1 +/-    1.20  0.060 / 0.340
G20     74.1           55.4                8.7 +/-    0.62      10.3 +/-    0.62  0.130 / 0.280
G21     153.4          23.7                7.1 +/-    0.81      14.3 +/-    0.81  0.150 / 0.260
G24     42.7           14.5                4.5 +/-    0.76      11.4 +/-    0.76  0.030 / 0.030
G27     237.9          21.1               10.5 +/-    1.05      22.5 +/-    1.05  0.030 / 0.050
G31     178.3          24.3                5.7 +/-    2.16      11.3 +/-    2.16  0.100 / 0.150
G32     315.5          76.7                8.0 +/-    1.35       8.2 +/-    1.35  0.070 / 0.160