PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/16-09:28:00
G01     122.9          15.0                4.6 +/-    2.16      11.5 +/-    2.16  0.030 / 0.050
G07     70.0           67.9                3.7 +/-    0.65       3.9 +/-    0.65  0.030 / 0.040
G08     46.3           33.6                2.0 +/-    0.34       3.3 +/-    0.34  0.100 / 0.280
G09     174.2          26.3                5.9 +/-    1.62      11.3 +/-    1.62  0.100 / 0.260
G11     110.8          38.2                5.1 +/-    0.61       7.6 +/-    0.61  0.020 / 0.040
G13     319.4          16.2                0.6 +/-    2.60       1.4 +/-    2.60  0.030 / 0.040
G17     200.1          21.4                4.7 +/-    1.60      10.0 +/-    1.60  0.130 / 0.250
G18     97.4           19.0                5.1 +/-    1.02      11.5 +/-    1.02  0.130 / 0.220
G28     283.5          54.9                4.6 +/-    0.82       5.4 +/-    0.82  0.110 / 0.350
G30     336.9          63.7                2.6 +/-    0.62       2.9 +/-    0.62  0.090 / 0.380