PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/29-20:42:40
G10     281.9          46.0               11.2 +/-    1.14      14.8 +/-    1.14  0.030 / 0.040
G15     51.3           42.8               10.1 +/-    0.78      14.0 +/-    0.78  0.040 / 0.040
G20     324.8          64.5                9.8 +/-    0.58      10.7 +/-    0.58  0.130 / 0.140
G21     49.3           77.0               10.9 +/-    0.36      11.1 +/-    0.36  0.060 / 0.140
G24     106.3          21.4               11.9 +/-    1.24      25.3 +/-    1.24  0.110 / 0.230
G27     311.8          27.0                9.0 +/-    2.16      16.8 +/-    2.16  0.090 / 0.180
G29     168.6          18.6               12.3 +/-    1.62      28.0 +/-    1.62  0.050 / 0.050
G32     206.5          21.7               13.0 +/-    1.54      27.4 +/-    1.54  0.040 / 0.060