PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/26-18:42:40
G02     17.1           67.1               13.5 +/-    0.33      14.6 +/-    0.33  0.030 / 0.040
G05     161.0          47.5               17.0 +/-    0.64      22.2 +/-    0.64  0.030 / 0.040
G06     48.0           25.6               12.0 +/-    1.04      23.1 +/-    1.04  0.040 / 0.080
G12     232.1          78.5               13.5 +/-    0.62      13.7 +/-    0.62  0.060 / 0.070
G19     91.3           15.3               13.6 +/-    1.10      33.4 +/-    1.10  0.120 / 0.300
G20     197.2          15.5               19.5 +/-    2.93      48.0 +/-    2.93  0.100 / 0.320
G24     217.6          11.5               18.7 +/-    3.70      50.5 +/-    3.70  0.030 / 0.070
G25     308.0          48.3               14.3 +/-    1.81      18.5 +/-    1.81  0.030 / 0.050
G29     300.0          21.8               13.3 +/-    1.44      28.0 +/-    1.44  0.110 / 0.180