PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/10-16:58:10
G07     339.0          60.1               11.4 +/-    1.02      12.9 +/-    1.02  0.030 / 0.050
G08     95.6           53.5               12.1 +/-    0.53      14.7 +/-    0.53  0.030 / 0.060
G09     187.0          69.0               13.0 +/-    0.69      13.8 +/-    0.69  0.150 / 0.430
G11     143.8          15.7               15.2 +/-    2.17      37.1 +/-    2.17  0.160 / 0.320
G23     155.3          32.3               13.4 +/-    0.90      22.4 +/-    0.90  0.050 / 0.120
G27     50.8           28.9                9.3 +/-    1.51      16.7 +/-    1.51  0.050 / 0.120
G28     241.2          33.3               13.9 +/-    1.08      22.7 +/-    1.08  0.070 / 0.170
G30     306.3          39.0                9.0 +/-    0.96      13.4 +/-    0.96  0.070 / 0.160