PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/17-19:12:30
G02     11.4           69.9               12.2 +/-    0.89      12.9 +/-    0.89  0.120 / 0.390
G05     162.1          44.7               19.1 +/-    0.86      25.8 +/-    0.86  0.120 / 0.420
G06     46.7           27.9                7.5 +/-    0.68      13.7 +/-    0.68  0.030 / 0.030
G12     248.2          79.7               11.2 +/-    0.88      11.3 +/-    0.88  0.030 / 0.030
G19     88.8           17.1               10.0 +/-    1.24      23.5 +/-    1.24  0.070 / 0.080
G20     197.2          12.8               27.7 +/-    6.51      72.6 +/-    6.51  0.060 / 0.080
G24     219.7          13.5               21.0 +/-    3.08      54.2 +/-    3.08  0.070 / 0.200
G25     310.3          46.1               11.5 +/-    2.00      15.3 +/-    2.00  0.100 / 0.230
G29     297.6          19.5               10.5 +/-    0.77      23.4 +/-    0.77  0.040 / 0.060