PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/12-15:12:30
G07     5.1            66.7                9.6 +/-    0.40      10.4 +/-    0.40  0.040 / 0.060
G08     70.0           50.9               10.0 +/-    0.74      12.5 +/-    0.74  0.040 / 0.060
G09     179.9          53.4                9.4 +/-    1.47      11.4 +/-    1.47  0.030 / 0.040
G11     133.7          24.8               10.8 +/-    1.32      21.3 +/-    1.32  0.030 / 0.050
G23     158.7          20.7               10.2 +/-    1.56      22.1 +/-    1.56  0.110 / 0.140
G27     42.2           20.1                8.3 +/-    0.65      18.1 +/-    0.65  0.100 / 0.140
G28     254.4          42.9               11.8 +/-    1.59      16.4 +/-    1.59  0.040 / 0.110
G30     316.8          47.6                7.9 +/-    0.48      10.2 +/-    0.48  0.060 / 0.090