PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/26-06:27:50
G02     31.9           56.9                3.0 +/-    1.10       3.5 +/-    1.10  0.020 / 0.030
G05     142.8          59.1                5.3 +/-    0.64       6.1 +/-    0.64  0.020 / 0.030
G06     51.2           20.7                2.1 +/-    3.13       4.5 +/-    3.13  0.030 / 0.020
G12     210.6          72.8                3.4 +/-    0.22       3.5 +/-    0.22  0.020 / 0.030
G19     97.0           12.1                4.2 +/-    2.10      11.2 +/-    2.10  0.140 / 0.280
G20     200.5          17.2                4.0 +/-    1.60       9.3 +/-    1.60  0.250 / 0.340
G25     303.1          49.9                2.8 +/-    4.35       3.5 +/-    4.35  0.190 / 0.170
G29     305.0          25.9                2.6 +/-    1.16       5.0 +/-    1.16  0.190 / 0.210