PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/06-13:13:10
G03     210.9          60.7                7.7 +/-    0.61       8.7 +/-    0.61  0.060 / 0.070
G07     255.3          18.1                5.7 +/-    2.53      13.2 +/-    2.53  0.050 / 0.070
G09     307.4          23.2                3.8 +/-    0.97       7.8 +/-    0.97  0.090 / 0.070
G16     115.0          63.3                6.3 +/-    1.10       7.0 +/-    1.10  0.060 / 0.070
G22     187.4          43.9                5.7 +/-    0.99       7.8 +/-    0.99  0.140 / 0.310
G23     326.7          56.6                4.7 +/-    0.72       5.5 +/-    0.72  0.080 / 0.260
G26     60.1           48.4                4.0 +/-    0.50       5.1 +/-    0.50  0.040 / 0.040
G31     56.7           13.5                3.9 +/-    2.82      10.0 +/-    2.82  0.030 / 0.040