PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/06-09:27:50
G07     15.6           68.0                4.4 +/-    0.96       4.7 +/-    0.96  0.050 / 0.050
G08     62.4           47.2                4.9 +/-    0.98       6.5 +/-    0.98  0.050 / 0.040
G09     175.7          46.3                6.9 +/-    0.56       9.1 +/-    0.56  0.230 / 0.180
G11     129.6          27.5                5.2 +/-    0.88       9.7 +/-    0.88  0.200 / 0.150
G18     114.1          9.9                -5.5 +/-   17.51     -15.4 +/-   17.51  0.120 / 0.200
G23     160.4          20.8                4.8 +/-    1.68      10.4 +/-    1.68  0.100 / 0.190
G27     41.2           18.5                3.5 +/-    1.60       8.1 +/-    1.60  0.020 / 0.030
G28     257.4          44.3                6.1 +/-    3.76       8.3 +/-    3.76  0.030 / 0.030
G30     318.3          48.8                3.0 +/-    0.94       3.9 +/-    0.94  0.200 / 0.340