PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/09-10:12:50
G01     116.7          19.6                6.5 +/-    1.61      14.4 +/-    1.61  0.030 / 0.030
G07     88.3           64.6                5.3 +/-    0.79       5.9 +/-    0.79  0.040 / 0.040
G08     43.4           27.4                2.4 +/-    0.77       4.5 +/-    0.77  0.030 / 0.030
G09     173.7          19.4                5.0 +/-    1.23      11.2 +/-    1.23  0.030 / 0.040
G11     101.5          41.0                7.4 +/-    0.70      10.6 +/-    0.70  0.130 / 0.200
G13     316.1          21.9                1.1 +/-    1.51       2.2 +/-    1.51  0.090 / 0.160
G17     201.8          28.7                5.6 +/-    0.97      10.1 +/-    0.97  0.060 / 0.210
G18     90.1           21.7                5.9 +/-    1.22      12.4 +/-    1.22  0.060 / 0.200
G28     296.5          57.9                4.3 +/-    1.13       5.0 +/-    1.13  0.130 / 0.210
G30     348.1          70.0                4.5 +/-    0.66       4.7 +/-    0.66  0.130 / 0.240