PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/11-07:58:00
G01     118.2          18.5                6.2 +/-    1.26      14.2 +/-    1.26  0.030 / 0.020
G07     85.0           65.1                7.2 +/-    0.64       7.9 +/-    0.64  0.030 / 0.020
G08     43.8           28.5                3.8 +/-    2.69       6.9 +/-    2.69  0.030 / 0.030
G09     173.2          20.2                7.1 +/-    1.87      15.6 +/-    1.87  0.030 / 0.020
G11     103.4          40.5                7.8 +/-    0.59      11.2 +/-    0.59  0.130 / 0.170
G13     317.0          20.6                3.3 +/-    1.63       7.2 +/-    1.63  0.120 / 0.190
G17     201.1          27.6                8.6 +/-    1.17      15.9 +/-    1.17  0.130 / 0.220
G18     91.2           21.1                6.4 +/-    1.83      13.6 +/-    1.83  0.150 / 0.220
G28     292.7          57.1                6.5 +/-    1.31       7.5 +/-    1.31  0.150 / 0.200
G30     344.6          68.4                5.9 +/-    0.46       6.3 +/-    0.46  0.170 / 0.220