PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/15-23:43:10
G10     279.9          45.0               13.0 +/-    1.39      17.5 +/-    1.39  0.080 / 0.140
G15     51.7           43.0               10.1 +/-    0.87      14.1 +/-    0.87  0.080 / 0.140
G20     280.4          39.7               18.5 +/-    0.75      27.1 +/-    0.75  0.040 / 0.040
G21     35.5           77.0               11.1 +/-    0.72      11.4 +/-    0.72  0.040 / 0.030
G24     109.0          20.5               13.6 +/-    1.66      29.6 +/-    1.66  0.100 / 0.200
G27     312.4          26.7               11.2 +/-    1.24      21.0 +/-    1.24  0.110 / 0.210
G29     169.0          20.9               13.6 +/-    2.17      29.1 +/-    2.17  0.030 / 0.060
G32     205.9          21.1               16.0 +/-    3.94      34.4 +/-    3.94  0.040 / 0.040