PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-19:57:40
G05     52.5           10.9                6.7 +/-    1.72      18.3 +/-    1.72  0.170 / 0.250
G10     243.5          20.6                9.5 +/-    1.42      20.6 +/-    1.42  0.200 / 0.270
G13     62.3           33.7                8.3 +/-    1.09      13.5 +/-    1.09  0.040 / 0.070
G15     115.1          58.0                7.8 +/-    1.19       9.0 +/-    1.19  0.050 / 0.070
G16     303.7          15.3                3.3 +/-    4.60       8.1 +/-    4.60  0.140 / 0.530
G20     258.9          44.8                6.5 +/-    1.68       8.8 +/-    1.68  0.150 / 0.520
G21     324.0          54.1                7.9 +/-    2.13       9.5 +/-    2.13  0.080 / 0.120
G26     276.2          18.5                7.8 +/-    1.46      17.8 +/-    1.46  0.090 / 0.130
G29     161.8          60.6               10.5 +/-    0.59      11.9 +/-    0.59  0.030 / 0.040