PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/09-19:57:00
G02     44.9           45.7                9.8 +/-    0.94      13.0 +/-    0.94  0.030 / 0.020
G05     98.6           69.7               11.3 +/-    0.56      12.0 +/-    0.56  0.040 / 0.020
G12     184.3          47.0               12.7 +/-    0.82      16.7 +/-    0.82  0.040 / 0.050
G25     266.0          58.8                9.2 +/-    1.27      10.6 +/-    1.27  0.040 / 0.040
G29     317.1          38.8                9.2 +/-    1.17      13.7 +/-    1.17  0.040 / 0.060