PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/24-04:58:00
G10     264.6          36.6                8.8 +/-    1.33      13.6 +/-    1.33  0.050 / 0.040
G13     43.1           20.2                5.5 +/-    2.50      12.1 +/-    2.50  0.040 / 0.040
G15     61.9           50.6                6.9 +/-    1.24       8.7 +/-    1.24  0.160 / 0.200
G20     329.4          68.4                7.5 +/-    0.35       8.0 +/-    0.35  0.250 / 0.160
G21     356.3          70.2                7.9 +/-    0.66       8.3 +/-    0.66  0.210 / 0.280
G24     121.9          12.9                6.8 +/-    2.11      17.9 +/-    2.11  0.240 / 0.240
G27     319.5          17.4                9.2 +/-    1.90      21.5 +/-    1.90  0.100 / 0.330
G29     168.0          34.2                8.1 +/-    1.17      13.1 +/-    1.17  0.200 / 0.270