PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/06-14:27:30
G03     207.9          54.9               11.2 +/-    2.16      13.3 +/-    2.16  0.090 / 0.300
G07     258.7          16.2                7.7 +/-    1.62      18.6 +/-    1.62  0.060 / 0.330
G09     311.4          29.7                6.8 +/-    1.26      12.0 +/-    1.26  0.030 / 0.040
G16     86.0           63.7                9.5 +/-    0.80      10.4 +/-    0.80  0.030 / 0.050
G22     183.6          35.8               10.0 +/-    2.43      15.7 +/-    2.43  0.030 / 0.040
G23     339.9          66.1                7.6 +/-    0.25       8.2 +/-    0.25  0.030 / 0.040
G26     50.8           39.8                9.1 +/-    0.76      13.2 +/-    0.76  0.050 / 0.100
G27     132.1          12.3               11.8 +/-    2.63      31.4 +/-    2.63  0.070 / 0.100