PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/20-03:27:50
G08     292.3          23.0               11.2 +/-    1.08      22.8 +/-    1.08  0.080 / 0.130
G10     9.5            63.0                7.5 +/-    0.70       8.3 +/-    0.70  0.090 / 0.110
G14     230.4          44.9               14.4 +/-    1.21      19.5 +/-    1.21  0.060 / 0.090
G18     317.7          10.3               -9.8 +/-   18.93     -27.2 +/-   18.93  0.070 / 0.110
G20     40.6           63.3                8.6 +/-    0.33       9.5 +/-    0.33  0.040 / 0.100
G21     147.2          40.4               10.2 +/-    0.82      14.8 +/-    0.82  0.050 / 0.090
G24     54.3           24.3                5.7 +/-    0.83      11.4 +/-    0.83  0.040 / 0.030
G27     253.5          31.2               14.0 +/-    0.89      23.9 +/-    0.89  0.040 / 0.030
G32     249.9          70.4               10.3 +/-    0.89      10.9 +/-    0.89  0.060 / 0.120