PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-08:57:40
G03     251.1          70.8                5.7 +/-    0.72       5.9 +/-    0.72  0.040 / 0.040
G09     299.6          13.3                2.5 +/-    6.13       6.5 +/-    6.13  0.040 / 0.050
G14     94.8           18.1                3.2 +/-    2.08       7.5 +/-    2.08  0.040 / 0.040
G16     136.0          53.8                6.6 +/-    0.76       7.9 +/-    0.76  0.040 / 0.040
G22     199.5          60.6                7.0 +/-    0.88       7.9 +/-    0.88  0.120 / 0.270
G23     317.6          47.9                4.1 +/-    1.16       5.2 +/-    1.16  0.150 / 0.280
G26     79.1           53.8                4.5 +/-    0.48       5.4 +/-    0.48  0.140 / 0.290
G31     50.1           22.6                2.3 +/-    2.23       4.7 +/-    2.23  0.130 / 0.290