PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/22-23:12:40
G02     67.9           27.7                7.5 +/-    0.99      13.7 +/-    0.99  0.070 / 0.080
G05     48.1           52.8                8.4 +/-    0.63      10.2 +/-    0.63  0.060 / 0.100
G12     181.7          18.5               13.8 +/-    1.89      31.5 +/-    1.89  0.030 / 0.040
G13     119.2          23.6               12.6 +/-    1.37      25.3 +/-    1.37  0.030 / 0.050
G15     159.2          20.7               14.2 +/-    1.11      30.8 +/-    1.11  0.110 / 0.170
G20     217.2          75.8               12.6 +/-    0.67      13.0 +/-    0.67  0.080 / 0.200
G21     281.0          24.7               10.9 +/-    1.63      21.4 +/-    1.63  0.060 / 0.130
G25     216.4          39.7               11.2 +/-    1.66      16.4 +/-    1.66  0.060 / 0.130
G29     338.6          68.7               11.3 +/-    0.72      12.0 +/-    0.72  0.030 / 0.040