PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/09-13:43:10
G03     231.0          67.3                8.7 +/-    0.41       9.3 +/-    0.41  0.100 / 0.200
G09     303.9          18.7                6.1 +/-    1.59      13.9 +/-    1.59  0.110 / 0.260
G14     99.2           17.5                7.2 +/-    1.90      16.9 +/-    1.90  0.040 / 0.060
G16     121.2          60.1                9.9 +/-    0.41      11.3 +/-    0.41  0.040 / 0.050
G22     188.5          51.0                9.8 +/-    0.83      12.2 +/-    0.83  0.050 / 0.060
G23     324.5          54.2                7.5 +/-    0.38       9.0 +/-    0.38  0.050 / 0.040
G26     65.4           49.6                7.6 +/-    0.74       9.7 +/-    0.74  0.040 / 0.060
G31     53.4           16.9                7.0 +/-    3.63      16.7 +/-    3.63  0.050 / 0.040