PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/12-13:57:50
G02     56.5           35.5                3.5 +/-    1.19       5.5 +/-    1.19  0.030 / 0.050
G05     66.2           66.3                4.0 +/-    0.47       4.4 +/-    0.47  0.040 / 0.050
G12     184.7          35.3                5.9 +/-    1.81       9.3 +/-    1.81  0.130 / 0.380
G13     129.8          13.2                7.3 +/-    1.64      19.0 +/-    1.64  0.110 / 0.340
G21     269.9          17.0                3.3 +/-    2.22       7.7 +/-    2.22  0.070 / 0.100
G25     232.9          53.1                2.9 +/-    1.28       3.5 +/-    1.28  0.070 / 0.100
G29     327.1          52.4                1.5 +/-    0.93       1.8 +/-    0.93  0.100 / 0.400