PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/11-15:27:50
G02     16.7           67.9                7.7 +/-    0.57       8.2 +/-    0.57  0.030 / 0.030
G05     160.4          45.7               12.7 +/-    1.49      16.9 +/-    1.49  0.020 / 0.030
G06     46.1           29.7                7.2 +/-    0.78      12.7 +/-    0.78  0.140 / 0.320
G12     257.0          79.3                9.1 +/-    0.56       9.3 +/-    0.56  0.170 / 0.340
G19     88.6           17.4                9.9 +/-    1.25      23.3 +/-    1.25  0.040 / 0.070
G20     197.8          11.7                7.9 +/-   12.84      21.3 +/-   12.84  0.030 / 0.060
G24     219.7          13.5               10.6 +/-    2.19      27.3 +/-    2.19  0.190 / 0.570
G25     311.4          43.8               10.4 +/-    1.66      14.3 +/-    1.66  0.180 / 0.390
G29     298.8          21.7                7.4 +/-    0.98      15.7 +/-    0.98  0.050 / 0.060