PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/17-13:27:40
G02     53.2           38.2                3.4 +/-    0.36       5.1 +/-    0.36  0.040 / 0.060
G05     76.0           68.8                5.0 +/-    0.53       5.3 +/-    0.53  0.030 / 0.060
G12     185.7          40.1                5.7 +/-    1.26       8.3 +/-    1.26  0.110 / 0.240
G13     133.0          10.5               -5.3 +/-   21.17     -14.6 +/-   21.17  0.110 / 0.310
G21     266.6          14.6                4.2 +/-    1.24      10.7 +/-    1.24  0.100 / 0.070
G25     239.2          56.0                5.2 +/-    0.84       6.2 +/-    0.84  0.050 / 0.080
G29     324.4          48.6                3.9 +/-    1.47       5.0 +/-    1.47  0.020 / 0.040