PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/28-17:58:10
G02     27.2           59.8                8.3 +/-    0.74       9.4 +/-    0.74  0.030 / 0.040
G05     144.6          59.8                9.7 +/-    1.40      11.0 +/-    1.40  0.020 / 0.040
G06     53.2           15.5                7.6 +/-    1.95      18.7 +/-    1.95  0.030 / 0.030
G12     190.4          66.9                7.7 +/-    0.68       8.3 +/-    0.68  0.020 / 0.030
G19     96.7           14.3                9.0 +/-    2.84      22.8 +/-    2.84  0.060 / 0.050
G25     299.4          52.9                8.2 +/-    1.43      10.1 +/-    1.43  0.040 / 0.060
G29     304.9          24.9                7.3 +/-    0.82      14.4 +/-    0.82  0.150 / 0.210