PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/18-01:43:00
G01     68.2           32.6                5.4 +/-    1.08       9.0 +/-    1.08  0.030 / 0.040
G07     138.7          29.2                6.4 +/-    1.46      11.5 +/-    1.46  0.030 / 0.050
G11     53.9           31.4                5.3 +/-    1.05       9.1 +/-    1.05  0.040 / 0.030
G13     272.6          36.9                5.9 +/-    3.07       9.1 +/-    3.07  0.040 / 0.030
G15     299.9          16.1                4.1 +/-    2.89       9.8 +/-    2.89  0.040 / 0.060
G17     237.1          69.3                6.3 +/-    0.43       6.7 +/-    0.43  0.040 / 0.060
G19     226.1          44.5                6.5 +/-    2.42       8.8 +/-    2.42  0.070 / 0.110
G28     24.7           58.5                7.8 +/-    2.03       9.0 +/-    2.03  0.080 / 0.080
G30     137.2          55.0                7.4 +/-    0.55       8.9 +/-    0.55  0.080 / 0.100