PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/28-18:12:30
G02     358.9          74.8               11.0 +/-    0.41      11.3 +/-    0.41  0.050 / 0.090
G05     166.2          37.3               15.6 +/-    0.86      23.8 +/-    0.86  0.060 / 0.090
G06     44.0           34.0                8.6 +/-    0.84      13.8 +/-    0.84  0.180 / 0.310
G12     289.9          77.8                8.3 +/-    0.76       8.5 +/-    0.76  0.190 / 0.380
G19     83.0           21.2                9.5 +/-    2.28      20.2 +/-    2.28  0.030 / 0.040
G24     224.4          18.2               13.8 +/-    2.26      31.7 +/-    2.26  0.020 / 0.040
G25     314.5          39.6               12.6 +/-    1.88      18.4 +/-    1.88  0.040 / 0.080
G29     292.8          15.5                9.5 +/-    1.84      23.3 +/-    1.84  0.040 / 0.080