PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/28-01:12:50
G10     286.3          47.8                8.2 +/-    1.20      10.6 +/-    1.20  0.070 / 0.110
G15     48.8           37.8                6.2 +/-    0.68       9.4 +/-    0.68  0.080 / 0.110
G20     295.8          52.1                7.9 +/-    0.78       9.7 +/-    0.78  0.040 / 0.110
G21     59.9           77.6                8.1 +/-    0.57       8.3 +/-    0.57  0.050 / 0.060
G24     104.4          23.0                8.6 +/-    1.31      17.7 +/-    1.31  0.090 / 0.200
G27     308.3          30.1                7.1 +/-    2.48      12.4 +/-    2.48  0.080 / 0.230
G29     169.0          15.9               12.1 +/-    2.40      29.6 +/-    2.40  0.050 / 0.040
G32     207.3          26.0               10.5 +/-    1.63      20.0 +/-    1.63  0.050 / 0.040