PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/29-07:58:00
G07     21.7           68.6                5.4 +/-    0.49       5.7 +/-    0.49  0.030 / 0.030
G08     59.7           45.7                4.8 +/-    1.03       6.4 +/-    1.03  0.030 / 0.030
G09     174.5          43.0                6.4 +/-    0.98       8.9 +/-    0.98  0.040 / 0.040
G11     127.7          28.8                7.0 +/-    1.53      12.5 +/-    1.53  0.040 / 0.050
G18     112.1          10.9                4.7 +/-    2.05      13.0 +/-    2.05  0.190 / 0.200
G23     160.8          19.5                5.6 +/-    2.06      12.5 +/-    2.06  0.110 / 0.240
G27     40.5           17.3                2.8 +/-    2.19       6.6 +/-    2.19  0.120 / 0.190
G28     259.5          45.4                7.1 +/-    2.43       9.5 +/-    2.43  0.110 / 0.140
G30     319.8          50.1                3.4 +/-    0.78       4.3 +/-    0.78  0.240 / 0.350