PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/07-19:58:00
G02     13.2           68.8               12.4 +/-    0.77      13.2 +/-    0.77  0.040 / 0.040
G05     160.3          47.0               14.3 +/-    0.70      18.7 +/-    0.70  0.030 / 0.030
G06     47.6           26.1               10.6 +/-    0.92      20.1 +/-    0.92  0.070 / 0.190
G12     234.9          79.1               11.3 +/-    0.49      11.5 +/-    0.49  0.090 / 0.250
G19     90.3           16.0               11.5 +/-    1.23      27.8 +/-    1.23  0.080 / 0.350
G20     197.0          14.7               12.5 +/-    3.11      31.3 +/-    3.11  0.090 / 0.330
G24     218.4          12.3               11.3 +/-    2.56      30.0 +/-    2.56  0.060 / 0.080
G25     308.6          48.2               12.7 +/-    0.82      16.3 +/-    0.82  0.040 / 0.070
G29     298.8          20.4               11.6 +/-    2.00      25.4 +/-    2.00  0.060 / 0.090