PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/12-08:42:50
G01     58.4           29.8                5.0 +/-    1.69       8.8 +/-    1.69  0.040 / 0.060
G06     182.0          14.0                5.9 +/-    2.22      15.1 +/-    2.22  0.040 / 0.050
G07     142.9          19.8                5.9 +/-    1.22      12.9 +/-    1.22  0.080 / 0.170
G11     47.5           21.8                3.1 +/-    1.49       6.6 +/-    1.49  0.110 / 0.220
G13     262.6          34.4                5.5 +/-    1.46       8.8 +/-    1.46  0.100 / 0.220
G15     292.3          16.6                1.6 +/-    1.89       3.8 +/-    1.89  0.130 / 0.220
G17     272.4          78.7                7.7 +/-    0.76       7.8 +/-    0.76  0.030 / 0.030
G19     235.1          53.8                7.2 +/-    2.11       8.7 +/-    2.11  0.020 / 0.030
G28     39.4           55.8                5.0 +/-    2.26       5.9 +/-    2.26  0.150 / 0.170
G30     144.3          50.4                8.6 +/-    0.56      10.9 +/-    0.56  0.210 / 0.190