PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/26-15:42:40
G07     331.7          57.5               15.8 +/-    0.93      18.4 +/-    0.93  0.030 / 0.050
G08     102.8          52.2               16.3 +/-    0.32      20.1 +/-    0.32  0.040 / 0.040
G09     191.5          73.9               15.6 +/-    0.69      16.2 +/-    0.69  0.030 / 0.040
G11     146.6          12.8               15.2 +/-    1.72      39.9 +/-    1.72  0.040 / 0.040
G23     154.1          38.2               15.9 +/-    0.68      23.8 +/-    0.68  0.060 / 0.090
G27     55.2           31.7               13.5 +/-    1.55      22.9 +/-    1.55  0.060 / 0.090
G28     237.2          29.4               18.1 +/-    1.10      32.1 +/-    1.10  0.040 / 0.070
G30     302.0          35.3               14.9 +/-    0.84      23.5 +/-    0.84  0.050 / 0.070