PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/08-00:42:50
G02     56.8           34.9                8.0 +/-    2.18      12.7 +/-    2.18  0.070 / 0.110
G05     62.7           63.0                8.5 +/-    0.40       9.4 +/-    0.40  0.050 / 0.140
G12     184.5          35.4                9.9 +/-    0.84      15.6 +/-    0.84  0.150 / 0.450
G13     130.9          12.8               10.7 +/-    3.19      28.0 +/-    3.19  0.090 / 0.380
G21     268.2          14.5                8.9 +/-    1.98      22.5 +/-    1.98  0.030 / 0.030
G25     243.1          54.2                7.4 +/-    2.40       8.9 +/-    2.40  0.040 / 0.030
G29     325.3          50.2                8.6 +/-    0.91      10.8 +/-    0.91  0.160 / 0.300