PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/10-00:12:30
G02     293.7          81.8                9.5 +/-    0.43       9.6 +/-    0.43  0.020 / 0.040
G05     167.0          25.7               17.5 +/-    2.00      33.7 +/-    2.00  0.030 / 0.040
G06     40.2           48.3               10.1 +/-    0.49      13.0 +/-    0.49  0.040 / 0.120
G12     319.8          62.2               11.1 +/-    0.87      12.3 +/-    0.87  0.050 / 0.110
G17     77.3           19.6               12.0 +/-    1.37      26.7 +/-    1.37  0.040 / 0.030
G19     65.7           33.9               11.6 +/-    0.72      18.8 +/-    0.72  0.030 / 0.030
G24     235.8          28.9               13.7 +/-    1.79      24.5 +/-    1.79  0.100 / 0.390
G25     317.8          19.9                9.7 +/-    1.11      21.3 +/-    1.11  0.140 / 0.300