PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/10-11:57:30
G02     35.7           53.5                4.4 +/-    1.26       5.3 +/-    1.26  0.030 / 0.020
G05     139.1          62.5                6.2 +/-    0.53       6.8 +/-    0.53  0.020 / 0.030
G06     52.8           19.9                1.8 +/-    3.96       4.1 +/-    3.96  0.210 / 0.290
G12     202.5          68.0                8.1 +/-    0.37       8.7 +/-    0.37  0.180 / 0.170
G20     199.6          25.0                6.2 +/-    2.93      12.2 +/-    2.93  0.030 / 0.020
G25     295.5          54.2                5.0 +/-    1.44       6.0 +/-    1.44  0.030 / 0.020
G29     310.0          32.3                3.4 +/-    1.51       5.6 +/-    1.51  0.230 / 0.280