PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-01:27:40
G02     57.0           34.6               10.2 +/-    1.59      16.3 +/-    1.59  0.070 / 0.080
G05     62.5           62.8               10.9 +/-    0.39      12.1 +/-    0.39  0.060 / 0.080
G12     184.9          35.7               15.7 +/-    0.72      24.6 +/-    0.72  0.140 / 0.430
G13     131.0          12.8               15.1 +/-    1.88      39.5 +/-    1.88  0.100 / 0.320
G21     268.3          14.6               12.4 +/-    2.84      31.1 +/-    2.84  0.030 / 0.030
G25     243.4          54.2               12.0 +/-    2.28      14.4 +/-    2.28  0.030 / 0.030
G29     325.4          50.3               11.3 +/-    1.10      14.2 +/-    1.10  0.060 / 0.050