PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/29-15:42:30
G07     340.4          60.6               16.3 +/-    0.38      18.4 +/-    0.38  0.050 / 0.040
G08     92.5           53.3               16.7 +/-    0.33      20.3 +/-    0.33  0.050 / 0.030
G09     185.3          67.7               16.6 +/-    0.54      17.8 +/-    0.54  0.040 / 0.040
G11     142.9          16.4               20.3 +/-    3.30      48.8 +/-    3.30  0.040 / 0.040
G23     155.9          32.5               15.8 +/-    0.83      26.3 +/-    0.83  0.090 / 0.080
G27     50.2           28.6               14.0 +/-    2.25      25.3 +/-    2.25  0.070 / 0.100
G28     241.9          33.8               17.9 +/-    1.92      29.0 +/-    1.92  0.060 / 0.100
G30     306.5          39.0               15.7 +/-    1.32      23.3 +/-    1.32  0.070 / 0.100