PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/25-14:57:50
G02     31.2           57.5                6.9 +/-    0.79       8.0 +/-    0.79  0.030 / 0.040
G05     148.6          58.4               11.4 +/-    0.82      13.1 +/-    0.82  0.030 / 0.040
G06     51.7           20.4                4.5 +/-    1.51       9.7 +/-    1.51  0.080 / 0.150
G12     207.3          71.5                8.7 +/-    1.69       9.1 +/-    1.69  0.100 / 0.220
G19     98.6           10.2                8.8 +/-    1.67      24.3 +/-    1.67  0.020 / 0.040
G20     198.4          22.8               10.4 +/-    1.44      21.5 +/-    1.44  0.030 / 0.040
G25     299.5          53.0                8.5 +/-    0.85      10.4 +/-    0.85  0.080 / 0.160
G29     308.2          30.9                6.9 +/-    1.40      11.9 +/-    1.40  0.070 / 0.180