PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/29-21:12:30
G02     56.6           35.8                9.8 +/-    1.23      15.3 +/-    1.23  0.030 / 0.040
G05     61.9           63.2                9.4 +/-    0.46      10.4 +/-    0.46  0.030 / 0.030
G12     182.5          32.3               10.5 +/-    2.42      17.6 +/-    2.42  0.130 / 0.290
G13     129.8          13.6               13.7 +/-    2.66      35.2 +/-    2.66  0.110 / 0.300
G21     269.1          14.9                9.7 +/-    2.00      24.2 +/-    2.00  0.060 / 0.060
G25     239.5          53.5                9.5 +/-    5.68      11.5 +/-    5.68  0.050 / 0.080
G29     325.9          51.0               10.4 +/-    1.31      13.0 +/-    1.31  0.060 / 0.080