PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/22-21:58:10
G02     63.1           30.5                6.3 +/-    2.93      10.9 +/-    2.93  0.030 / 0.040
G05     52.1           56.4                9.2 +/-    0.63      10.9 +/-    0.63  0.030 / 0.040
G12     181.5          24.6               12.4 +/-    1.31      24.4 +/-    1.31  0.240 / 0.390
G13     123.7          18.8               12.7 +/-    1.10      28.7 +/-    1.10  0.200 / 0.250
G15     162.9          15.2               15.0 +/-    1.49      37.0 +/-    1.49  0.100 / 0.110
G21     275.2          19.7               11.9 +/-    1.88      26.4 +/-    1.88  0.080 / 0.110
G25     229.0          47.9               11.1 +/-    3.19      14.4 +/-    3.19  0.100 / 0.130
G29     330.7          58.5               10.7 +/-    1.38      12.4 +/-    1.38  0.110 / 0.110