PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/13-10:58:00
G01     87.1           32.4                2.2 +/-    2.23       3.7 +/-    2.23  0.020 / 0.020
G07     127.9          42.6                5.7 +/-    0.86       8.0 +/-    0.86  0.030 / 0.020
G11     64.5           37.9                4.4 +/-    0.93       6.6 +/-    0.93  0.100 / 0.090
G13     291.2          37.0                6.4 +/-    3.77       9.8 +/-    3.77  0.100 / 0.110
G17     216.2          57.8                5.2 +/-    1.16       6.1 +/-    1.16  0.060 / 0.110
G18     59.9           22.6                3.2 +/-    2.61       6.5 +/-    2.61  0.050 / 0.110
G19     216.1          25.0                5.0 +/-    2.21       9.8 +/-    2.21  0.070 / 0.190
G28     352.3          61.6                3.8 +/-    0.46       4.3 +/-    0.46  0.080 / 0.170
G30     110.1          75.8                4.8 +/-    0.71       5.0 +/-    0.71  0.050 / 0.050