PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/16-14:13:00
G03     228.0          69.1                8.5 +/-    0.59       9.1 +/-    0.59  0.060 / 0.240
G07     247.5          11.0               -4.3 +/-   16.37     -11.9 +/-   16.37  0.090 / 0.240
G09     301.8          15.7                5.7 +/-    2.98      13.9 +/-    2.98  0.030 / 0.040
G14     98.2           14.9                8.2 +/-    1.63      20.5 +/-    1.63  0.050 / 0.040
G16     136.9          55.9               10.4 +/-    0.90      12.3 +/-    0.90  0.140 / 0.420
G22     189.4          53.4               10.1 +/-    0.45      12.2 +/-    0.45  0.150 / 0.410
G23     317.7          47.6                7.5 +/-    0.84       9.7 +/-    0.84  0.170 / 0.290
G26     76.1           54.3                8.0 +/-    0.47       9.6 +/-    0.47  0.140 / 0.370
G31     51.2           21.7                6.8 +/-    1.90      14.4 +/-    1.90  0.050 / 0.060