PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/28-16:13:10
G03     254.4          71.6                9.6 +/-    0.68      10.0 +/-    0.68  0.160 / 0.240
G09     297.9          11.1               -9.5 +/-   25.85     -25.7 +/-   25.85  0.250 / 0.280
G14     91.6           22.3                7.6 +/-    0.98      15.8 +/-    0.98  0.040 / 0.040
G16     138.8          52.1               12.5 +/-    0.67      15.4 +/-    0.67  0.090 / 0.090
G22     196.7          62.3               11.1 +/-    0.54      12.3 +/-    0.54  0.040 / 0.050
G23     314.7          45.1                8.0 +/-    0.84      10.7 +/-    0.84  0.060 / 0.070
G26     82.0           53.6               10.0 +/-    1.08      12.0 +/-    1.08  0.080 / 0.050
G31     48.5           25.0                7.5 +/-    2.09      14.7 +/-    2.09  0.120 / 0.090