PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/23-03:58:00
G05     51.2           11.1                4.5 +/-    2.57      12.2 +/-    2.57  0.050 / 0.050
G10     239.9          16.5               11.5 +/-    1.30      27.5 +/-    1.30  0.040 / 0.040
G13     68.8           35.7                6.5 +/-    1.01      10.2 +/-    1.01  0.400 / 0.310
G15     114.9          55.4                8.8 +/-    0.53      10.4 +/-    0.53  0.200 / 0.210
G20     263.4          57.6                8.6 +/-    0.84       9.9 +/-    0.84  0.060 / 0.100
G21     318.1          50.3                7.0 +/-    0.59       8.8 +/-    0.59  0.060 / 0.090
G26     280.1          20.0                7.4 +/-    1.83      16.3 +/-    1.83  0.030 / 0.030
G29     160.0          66.6                7.8 +/-    0.53       8.5 +/-    0.53  0.040 / 0.030