PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/10-21:57:50
G02     45.1           45.3                8.7 +/-    1.27      11.6 +/-    1.27  0.030 / 0.030
G05     99.1           69.4               10.7 +/-    0.75      11.4 +/-    0.75  0.030 / 0.030
G12     185.9          49.0               12.8 +/-    0.82      16.4 +/-    0.82  0.030 / 0.040
G25     268.6          58.5                9.0 +/-    3.81      10.4 +/-    3.81  0.030 / 0.040
G29     316.7          38.3                8.7 +/-    0.99      12.9 +/-    0.99  0.040 / 0.050