PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/02-18:42:50
G02     53.3           38.9                7.5 +/-    1.50      11.1 +/-    1.50  0.030 / 0.030
G05     68.9           66.1                9.5 +/-    0.40      10.3 +/-    0.40  0.040 / 0.030
G12     181.7          34.4               10.3 +/-    1.04      16.5 +/-    1.04  0.050 / 0.080
G13     131.9          11.6               12.9 +/-    2.56      34.8 +/-    2.56  0.060 / 0.070
G21     266.6          12.9               10.2 +/-    2.36      26.6 +/-    2.36  0.050 / 0.090
G25     243.4          55.3                9.0 +/-    1.22      10.7 +/-    1.22  0.060 / 0.090
G29     323.8          48.0                7.7 +/-    0.60      10.0 +/-    0.60  0.040 / 0.050