PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/28-03:27:50
G08     276.4          21.4                8.7 +/-    1.04      18.5 +/-    1.04  0.080 / 0.110
G10     42.3           61.4                8.0 +/-    0.61       8.9 +/-    0.61  0.070 / 0.140
G14     247.3          57.7                8.7 +/-    0.94      10.1 +/-    0.94  0.110 / 0.140
G18     316.1          23.4                6.6 +/-    0.96      13.3 +/-    0.96  0.090 / 0.190
G20     62.8           60.9               18.6 +/-    1.56      21.0 +/-    1.56  0.090 / 0.170
G21     152.9          25.6                7.5 +/-    1.86      14.5 +/-    1.86  0.160 / 0.210
G24     43.6           15.6                4.9 +/-    2.31      11.9 +/-    2.31  0.040 / 0.050
G27     239.5          22.3                9.8 +/-    1.68      20.3 +/-    1.68  0.040 / 0.070
G31     178.8          22.4               10.1 +/-    1.84      21.0 +/-    1.84  0.280 / 0.340
G32     306.7          76.9                9.0 +/-    0.65       9.2 +/-    0.65  0.310 / 0.330