PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/06-21:28:00
G02     26.1           61.0                9.7 +/-    0.43      10.9 +/-    0.43  0.050 / 0.050
G05     147.0          57.1               11.1 +/-    0.66      12.9 +/-    0.66  0.050 / 0.050
G06     51.2           18.9                7.9 +/-    1.67      17.8 +/-    1.67  0.040 / 0.030
G12     200.8          72.4               10.8 +/-    0.89      11.2 +/-    0.89  0.040 / 0.040
G19     94.4           15.5                9.0 +/-    0.99      22.2 +/-    0.99  0.060 / 0.070
G25     304.4          49.5               10.4 +/-    0.45      13.2 +/-    0.45  0.040 / 0.070
G29     302.6          22.6                9.3 +/-    1.57      19.2 +/-    1.57  0.040 / 0.060