PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/22-17:58:00
G02     66.7           28.6                6.1 +/-    0.98      11.1 +/-    0.98  0.040 / 0.050
G05     48.8           54.2                5.6 +/-    0.34       6.7 +/-    0.34  0.030 / 0.050
G12     180.7          19.4                9.3 +/-    1.66      20.7 +/-    1.66  0.070 / 0.220
G13     118.6          22.5               10.3 +/-    1.67      21.4 +/-    1.67  0.070 / 0.170
G15     162.0          18.7               11.1 +/-    1.42      25.1 +/-    1.42  0.150 / 0.210
G21     280.5          24.0                6.9 +/-    1.03      13.7 +/-    1.03  0.080 / 0.250
G25     220.2          42.3                8.3 +/-    1.90      11.7 +/-    1.90  0.080 / 0.270
G29     335.4          64.8                6.8 +/-    0.59       7.5 +/-    0.59  0.080 / 0.320