PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-17:13:00
G02     13.6           69.3               15.7 +/-    0.83      16.6 +/-    0.83  0.060 / 0.070
G05     162.5          44.1               18.5 +/-    0.86      25.3 +/-    0.86  0.060 / 0.070
G06     46.2           29.2               11.5 +/-    1.94      20.5 +/-    1.94  0.030 / 0.030
G12     257.4          79.5               12.8 +/-    1.04      13.0 +/-    1.04  0.030 / 0.020
G19     88.2           17.6               14.1 +/-    2.01      33.0 +/-    2.01  0.050 / 0.050
G20     197.5          11.8               11.7 +/-   28.12      31.3 +/-   28.12  0.040 / 0.050
G24     220.1          13.9               17.9 +/-    5.51      45.8 +/-    5.51  0.100 / 0.230
G25     311.4          44.3               14.1 +/-    0.92      19.2 +/-    0.92  0.080 / 0.220
G29     297.7          20.2               12.3 +/-    1.12      26.9 +/-    1.12  0.170 / 0.530