PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-05:13:00
G10     275.4          43.6                9.2 +/-    1.71      12.7 +/-    1.71  0.100 / 0.160
G13     38.9           12.0                5.6 +/-    1.87      14.9 +/-    1.87  0.180 / 0.140
G15     52.3           41.9                8.0 +/-    0.77      11.3 +/-    0.77  0.040 / 0.030
G20     312.5          63.0                8.0 +/-    1.02       8.9 +/-    1.02  0.040 / 0.030
G21     28.6           75.5                9.0 +/-    1.18       9.3 +/-    1.18  0.110 / 0.080
G24     114.0          18.3                6.6 +/-    2.13      15.2 +/-    2.13  0.100 / 0.050
G27     315.8          23.0                7.9 +/-    1.48      16.2 +/-    1.48  0.090 / 0.180
G29     166.4          21.1                8.9 +/-    0.95      19.1 +/-    0.95  0.350 / 0.330
G32     206.2          12.0                3.9 +/-   30.13      10.4 +/-   30.13  0.100 / 0.180