PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-03:13:00
G01     245.0          32.3                6.9 +/-    1.04      11.5 +/-    1.04  0.040 / 0.040
G03     314.7          47.8                2.5 +/-    1.05       3.3 +/-    1.05  0.040 / 0.040
G14     65.3           38.1                3.9 +/-    0.80       5.9 +/-    0.80  0.070 / 0.120
G16     158.8          24.3                4.7 +/-    9.20       9.3 +/-    9.20  0.070 / 0.120
G18     215.8          22.7                7.3 +/-    1.32      15.1 +/-    1.32  0.050 / 0.090
G22     295.8          69.9                5.1 +/-    0.63       5.4 +/-    0.63  0.050 / 0.120
G23     290.5          22.0                5.3 +/-    2.69      11.1 +/-    2.69  0.070 / 0.220
G26     129.6          42.8                7.4 +/-    0.73      10.3 +/-    0.73  0.150 / 0.180
G31     40.7           52.2                3.3 +/-    0.37       4.1 +/-    0.37  0.070 / 0.240
G32     82.4           18.5                4.6 +/-    0.73      10.5 +/-    0.73  0.070 / 0.240