PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/11-11:28:10
G02     46.1           44.0                4.9 +/-    0.93       6.8 +/-    0.93  0.050 / 0.060
G05     102.9          70.3                8.0 +/-    0.48       8.5 +/-    0.48  0.040 / 0.050
G12     189.0          51.0                9.8 +/-    0.96      12.2 +/-    0.96  0.060 / 0.050
G25     254.9          60.4                6.5 +/-    0.57       7.4 +/-    0.57  0.060 / 0.050
G29     318.7          41.3                6.7 +/-    0.80       9.5 +/-    0.80  0.030 / 0.030