PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/02-18:42:40
G02     53.3           38.9                8.4 +/-    1.11      12.4 +/-    1.11  0.040 / 0.020
G05     68.9           66.1                8.7 +/-    0.34       9.5 +/-    0.34  0.040 / 0.040
G12     181.7          34.4               10.4 +/-    1.67      16.8 +/-    1.67  0.100 / 0.270
G13     131.9          11.6               13.2 +/-    3.79      35.7 +/-    3.79  0.100 / 0.270
G21     266.6          12.9                9.0 +/-    1.90      23.7 +/-    1.90  0.040 / 0.110
G25     243.4          55.3                9.8 +/-    0.83      11.7 +/-    0.83  0.100 / 0.100
G29     323.8          48.0                8.1 +/-    1.60      10.5 +/-    1.60  0.120 / 0.360