PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/28-22:57:30
G10     284.0          46.9               11.0 +/-    1.37      14.4 +/-    1.37  0.070 / 0.090
G15     50.1           40.6                8.8 +/-    0.38      12.7 +/-    0.38  0.080 / 0.130
G20     279.2          35.1                6.4 +/-    1.04      10.2 +/-    1.04  0.040 / 0.040
G21     50.0           77.6               10.8 +/-    0.31      11.0 +/-    0.31  0.040 / 0.050
G24     105.7          22.1               13.7 +/-    1.04      28.6 +/-    1.04  0.110 / 0.200
G27     310.0          28.8               10.0 +/-    0.82      17.9 +/-    0.82  0.090 / 0.240
G29     169.0          17.8               14.7 +/-    2.44      34.2 +/-    2.44  0.040 / 0.060
G32     206.7          24.2               14.0 +/-    1.21      28.0 +/-    1.21  0.030 / 0.050