PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/11-10:27:50
G01     106.8          25.7                4.4 +/-    0.76       8.5 +/-    0.76  0.030 / 0.050
G07     107.9          57.4                5.6 +/-    0.63       6.5 +/-    0.63  0.020 / 0.040
G08     41.6           18.4                1.6 +/-    0.66       3.7 +/-    0.66  0.020 / 0.030
G11     86.9           42.5                5.2 +/-    0.32       7.3 +/-    0.32  0.030 / 0.030
G13     309.1          29.2                5.0 +/-    1.73       9.0 +/-    1.73  0.080 / 0.150
G17     205.4          39.6                9.4 +/-    1.03      13.7 +/-    1.03  0.080 / 0.120
G18     78.7           24.0                2.8 +/-    0.90       5.7 +/-    0.90  0.080 / 0.170
G28     316.8          60.8                5.6 +/-    0.72       6.3 +/-    0.72  0.070 / 0.160
G30     17.0           77.9                5.4 +/-    0.64       5.5 +/-    0.64  0.070 / 0.150