PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/27-19:12:40
G02     55.5           37.1               10.1 +/-    0.59      15.5 +/-    0.59  0.030 / 0.040
G05     63.8           64.3                9.9 +/-    0.51      10.9 +/-    0.51  0.030 / 0.040
G12     181.6          32.0               14.7 +/-    0.82      24.7 +/-    0.82  0.120 / 0.370
G13     130.1          13.2               13.8 +/-    1.63      35.7 +/-    1.63  0.140 / 0.430
G21     268.5          14.4               12.0 +/-    3.12      30.3 +/-    3.12  0.110 / 0.100
G25     239.5          53.8               10.5 +/-    0.78      12.7 +/-    0.78  0.100 / 0.130
G29     325.4          50.3               10.6 +/-    0.91      13.3 +/-    0.91  0.080 / 0.460