PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/08-00:12:40
G07     41.4           69.7                8.4 +/-    0.65       8.9 +/-    0.65  0.230 / 0.340
G08     54.5           43.8                6.5 +/-    0.63       9.0 +/-    0.63  0.180 / 0.430
G09     179.5          40.8               11.4 +/-    1.42      16.4 +/-    1.42  0.050 / 0.070
G11     124.6          32.5                9.6 +/-    0.87      16.0 +/-    0.87  0.040 / 0.060
G17     200.1          10.7               -3.1 +/-   23.02      -8.4 +/-   23.02  0.040 / 0.050
G23     160.2          10.0                9.6 +/-    1.47      26.8 +/-    1.47  0.040 / 0.050
G28     271.9          51.6                9.1 +/-    1.17      11.3 +/-    1.17  0.020 / 0.030
G30     335.0          61.1                7.2 +/-    0.68       8.0 +/-    0.68  0.020 / 0.040