PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/08-08:12:50
G01     117.1          19.2                6.9 +/-    2.24      15.4 +/-    2.24  0.030 / 0.030
G07     87.7           64.5                8.4 +/-    0.29       9.2 +/-    0.29  0.030 / 0.040
G08     43.5           27.4                3.9 +/-    1.27       7.3 +/-    1.27  0.030 / 0.040
G09     173.0          18.9                7.8 +/-    1.79      17.6 +/-    1.79  0.040 / 0.040
G11     101.8          40.8                8.9 +/-    0.34      12.7 +/-    0.34  0.120 / 0.190
G13     316.4          21.5                2.1 +/-    2.56       4.3 +/-    2.56  0.130 / 0.240
G17     201.4          28.8                7.7 +/-    1.31      13.9 +/-    1.31  0.170 / 0.240
G18     90.0           21.5                6.3 +/-    0.76      13.3 +/-    0.76  0.110 / 0.230
G28     294.9          57.5                6.6 +/-    1.06       7.7 +/-    1.06  0.070 / 0.220
G30     346.7          69.4                5.5 +/-    0.82       5.8 +/-    0.82  0.060 / 0.220