PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/27-17:28:00
G01     305.2          34.4                7.3 +/-    1.41      11.8 +/-    1.41  0.070 / 0.150
G10     108.2          38.9                9.6 +/-    0.96      14.2 +/-    0.96  0.090 / 0.130
G11     281.6          27.5                7.3 +/-    1.14      13.4 +/-    1.14  0.040 / 0.060
G14     359.4          66.2                7.0 +/-    0.64       7.6 +/-    0.64  0.050 / 0.070
G22     310.5          28.1                5.4 +/-    1.06       9.9 +/-    1.06  0.040 / 0.040
G25     80.4           17.3                8.3 +/-    1.04      19.6 +/-    1.04  0.030 / 0.040
G31     164.5          67.5               10.7 +/-    0.84      11.4 +/-    0.84  0.080 / 0.210
G32     38.7           50.7                9.3 +/-    0.73      11.7 +/-    0.73  0.080 / 0.160