PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/29-20:12:50
G02     60.2           32.9               14.2 +/-    0.91      23.4 +/-    0.91  0.040 / 0.110
G05     60.8           65.2               16.5 +/-    0.50      18.0 +/-    0.50  0.030 / 0.130
G12     184.7          30.5               19.0 +/-    1.39      32.9 +/-    1.39  0.050 / 0.060
G13     128.7          16.2               19.6 +/-    1.37      47.3 +/-    1.37  0.050 / 0.070
G15     163.6          12.7               22.2 +/-    2.73      58.3 +/-    2.73  0.100 / 0.230
G20     208.0          62.9               19.9 +/-    0.75      22.1 +/-    0.75  0.110 / 0.310
G21     272.6          18.9               -6.0 +/-   18.32     -13.6 +/-   18.32  0.030 / 0.040
G25     228.1          49.6               18.4 +/-    1.00      23.4 +/-    1.00  0.030 / 0.040
G29     332.0          59.1               15.9 +/-    0.60      18.2 +/-    0.60  0.040 / 0.040