PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/22-19:27:40
G02     53.6           38.6                7.7 +/-    1.32      11.5 +/-    1.32  0.040 / 0.030
G05     68.5           65.9                9.1 +/-    0.45       9.8 +/-    0.45  0.030 / 0.030
G12     182.1          34.7               10.9 +/-    1.40      17.4 +/-    1.40  0.190 / 0.310
G13     131.9          11.6               13.5 +/-    2.49      36.4 +/-    2.49  0.120 / 0.330
G21     266.6          12.9               10.2 +/-    1.81      26.6 +/-    1.81  0.050 / 0.100
G25     243.8          55.3                8.6 +/-    1.62      10.2 +/-    1.62  0.050 / 0.100
G29     323.9          48.1                7.9 +/-    0.62      10.2 +/-    0.62  0.060 / 0.070