PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/29-15:58:10
G07     353.8          64.3               15.4 +/-    0.70      16.8 +/-    0.70  0.030 / 0.050
G08     79.3           52.9               18.4 +/-    0.59      22.4 +/-    0.59  0.030 / 0.060
G09     181.7          59.6               18.6 +/-    1.57      21.1 +/-    1.57  0.040 / 0.040
G11     137.8          21.2               19.5 +/-    1.44      41.7 +/-    1.44  0.030 / 0.040
G23     157.6          25.1               16.5 +/-    2.50      32.3 +/-    2.50  0.080 / 0.070
G27     45.0           23.7               13.2 +/-    0.91      26.6 +/-    0.91  0.070 / 0.090
G28     248.9          39.3               20.0 +/-    1.49      29.4 +/-    1.49  0.060 / 0.110
G30     312.7          44.2               13.5 +/-    1.48      18.5 +/-    1.48  0.050 / 0.100