PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/12-23:27:30
G08     298.1          22.9                9.0 +/-    0.94      18.5 +/-    0.94  0.060 / 0.110
G10     355.4          62.5                7.8 +/-    0.72       8.7 +/-    0.72  0.070 / 0.120
G14     225.0          40.3               13.5 +/-    1.36      19.5 +/-    1.36  0.060 / 0.100
G20     56.7           55.4                9.3 +/-    0.71      11.0 +/-    0.71  0.070 / 0.110
G21     143.3          46.3               10.9 +/-    1.02      14.4 +/-    1.02  0.030 / 0.040
G24     59.6           26.3                9.1 +/-    0.86      17.3 +/-    0.86  0.030 / 0.030
G27     262.1          34.2               11.0 +/-    1.07      17.7 +/-    1.07  0.060 / 0.080
G32     236.3          64.1               11.9 +/-    0.74      13.1 +/-    0.74  0.060 / 0.080