PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/16-18:12:30
G02     63.0           31.6                7.5 +/-    0.73      12.7 +/-    0.73  0.030 / 0.050
G05     52.0           57.9                6.0 +/-    0.47       6.9 +/-    0.47  0.030 / 0.050
G12     181.3          23.3                9.9 +/-    2.77      20.1 +/-    2.77  0.090 / 0.260
G13     122.3          19.7               10.8 +/-    1.05      23.8 +/-    1.05  0.100 / 0.270
G15     164.5          15.0               10.2 +/-    1.16      25.4 +/-    1.16  0.120 / 0.250
G21     276.9          21.4                6.6 +/-    1.56      14.2 +/-    1.56  0.080 / 0.210
G25     224.7          46.1                8.2 +/-    0.76      10.9 +/-    0.76  0.060 / 0.190
G29     332.3          60.4                7.1 +/-    0.78       8.1 +/-    0.78  0.060 / 0.180