PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-03:12:40
G02     65.5           27.3                4.2 +/-    0.73       7.8 +/-    0.73  0.040 / 0.140
G05     50.4           53.6                5.7 +/-    0.23       6.9 +/-    0.23  0.070 / 0.210
G12     183.4          25.6                9.7 +/-    1.05      18.6 +/-    1.05  0.080 / 0.260
G13     123.0          19.7                9.1 +/-    2.04      20.2 +/-    2.04  0.080 / 0.260
G15     159.9          17.6                9.2 +/-    1.77      21.5 +/-    1.77  0.030 / 0.030
G20     220.8          26.0               10.3 +/-    1.66      19.7 +/-    1.66  0.040 / 0.040
G21     276.6          21.1                7.6 +/-    1.84      16.2 +/-    1.84  0.060 / 0.070
G25     229.2          47.0                9.6 +/-    1.56      12.5 +/-    1.56  0.060 / 0.070
G29     332.2          60.5                8.1 +/-    1.00       9.1 +/-    1.00  0.060 / 0.120