PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/04-16:57:40
G02     63.0           31.1                8.9 +/-    0.79      15.3 +/-    0.79  0.050 / 0.090
G05     53.0           59.5                8.4 +/-    0.38       9.6 +/-    0.38  0.060 / 0.090
G12     181.9          24.6                9.4 +/-    2.90      18.6 +/-    2.90  0.100 / 0.300
G13     122.7          19.3               11.7 +/-    1.51      26.3 +/-    1.51  0.100 / 0.280
G15     164.0          15.1               11.3 +/-    1.86      28.0 +/-    1.86  0.090 / 0.320
G21     276.7          21.4                8.7 +/-    2.28      18.5 +/-    2.28  0.080 / 0.200
G25     224.3          46.3               10.8 +/-    1.24      14.3 +/-    1.24  0.030 / 0.030
G29     332.3          60.2                8.9 +/-    0.89      10.1 +/-    0.89  0.030 / 0.040