PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/17-02:13:00
G02     57.2           34.3               11.3 +/-    1.84      18.2 +/-    1.84  0.060 / 0.080
G05     62.4           62.6               10.7 +/-    0.48      11.9 +/-    0.48  0.060 / 0.090
G12     185.2          36.1               14.0 +/-    1.19      21.9 +/-    1.19  0.030 / 0.040
G13     131.1          12.8               12.5 +/-    2.10      32.8 +/-    2.10  0.030 / 0.030
G20     217.1          12.1               10.3 +/-   19.00      27.3 +/-   19.00  0.150 / 0.530
G21     268.3          14.7               10.3 +/-    5.29      25.8 +/-    5.29  0.100 / 0.300
G25     243.7          54.2               14.3 +/-    2.56      17.2 +/-    2.56  0.050 / 0.050
G29     325.5          50.4               12.5 +/-    1.56      15.7 +/-    1.56  0.050 / 0.060