PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/23-04:28:00
G03     234.0          66.4                3.8 +/-    0.69       4.1 +/-    0.69  0.140 / 0.400
G09     307.2          25.8                2.3 +/-    1.87       4.3 +/-    1.87  0.160 / 0.440
G14     102.0          12.8                4.8 +/-    2.31      12.5 +/-    2.31  0.050 / 0.050
G16     116.6          61.1                4.7 +/-    0.43       5.3 +/-    0.43  0.060 / 0.040
G22     194.6          52.6                5.8 +/-    0.64       7.1 +/-    0.64  0.050 / 0.050
G23     320.9          50.7                3.5 +/-    0.83       4.3 +/-    0.83  0.040 / 0.050
G26     63.8           49.3                4.0 +/-    0.55       5.1 +/-    0.55  0.040 / 0.040
G31     54.1           16.8                1.8 +/-    2.32       4.3 +/-    2.32  0.040 / 0.040