PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/10-15:12:30
G02     207.0          43.2               12.1 +/-    0.59      16.8 +/-    0.59  0.060 / 0.090
G06     136.6          77.7               10.4 +/-    0.72      10.6 +/-    0.72  0.080 / 0.080
G12     312.8          23.0                9.1 +/-    1.69      18.5 +/-    1.69  0.070 / 0.140
G17     47.0           40.0                9.8 +/-    0.86      14.3 +/-    0.86  0.090 / 0.150
G19     23.1           57.7               10.3 +/-    0.18      11.9 +/-    0.18  0.030 / 0.060
G24     288.2          40.8                9.0 +/-    2.04      12.9 +/-    2.04  0.030 / 0.060
G28     111.9          24.0                9.0 +/-    0.73      18.0 +/-    0.73  0.020 / 0.030