PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/11-12:58:10
G01     57.2           29.2                5.5 +/-    0.98       9.7 +/-    0.98  0.030 / 0.060
G06     180.1          17.0                7.0 +/-    3.35      16.7 +/-    3.35  0.040 / 0.050
G07     143.2          17.5                6.2 +/-    1.08      14.6 +/-    1.08  0.080 / 0.310
G11     46.6           19.5                4.9 +/-    0.73      11.0 +/-    0.73  0.120 / 0.210
G13     261.9          33.9                5.8 +/-    1.13       9.5 +/-    1.13  0.110 / 0.280
G15     292.9          16.1                2.7 +/-    2.34       6.5 +/-    2.34  0.090 / 0.290
G17     282.3          79.6                5.8 +/-    1.18       5.9 +/-    1.18  0.180 / 0.210
G19     236.6          55.3                6.2 +/-    1.03       7.4 +/-    1.03  0.080 / 0.120
G28     40.8           55.5                5.1 +/-    0.39       6.0 +/-    0.39  0.040 / 0.100
G30     145.3          51.1                6.4 +/-    1.73       7.9 +/-    1.73  0.060 / 0.080