PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/11-09:43:10
G01     124.5          13.7                6.2 +/-    2.61      15.9 +/-    2.61  0.030 / 0.030
G07     64.2           68.6                5.3 +/-    0.39       5.6 +/-    0.39  0.030 / 0.040
G08     47.4           35.3                2.6 +/-    1.01       4.1 +/-    1.01  0.040 / 0.040
G09     174.5          28.6                7.6 +/-    1.76      13.8 +/-    1.76  0.030 / 0.030
G11     113.2          37.2                7.0 +/-    1.03      10.6 +/-    1.03  0.120 / 0.350
G13     320.1          14.6                1.5 +/-    2.48       3.7 +/-    2.48  0.140 / 0.350
G17     199.8          19.3                5.8 +/-    1.37      13.0 +/-    1.37  0.090 / 0.340
G18     99.5           18.1                5.5 +/-    1.47      12.8 +/-    1.47  0.120 / 0.380
G28     280.3          53.9                7.2 +/-    0.69       8.6 +/-    0.69  0.140 / 0.360
G30     334.5          62.0                3.9 +/-    0.62       4.3 +/-    0.62  0.130 / 0.310