PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/31-21:58:00
G10     259.7          33.7               11.2 +/-    1.95      18.2 +/-    1.95  0.130 / 0.320
G13     45.7           23.3                9.3 +/-    1.97      19.0 +/-    1.97  0.130 / 0.290
G15     73.2           56.8               12.2 +/-    0.91      14.3 +/-    0.91  0.040 / 0.040
G16     283.9          14.5                9.3 +/-    1.49      23.5 +/-    1.49  0.060 / 0.040
G20     259.8          19.8               14.8 +/-    2.12      32.6 +/-    2.12  0.280 / 0.370
G21     345.8          66.4               10.2 +/-    0.55      11.1 +/-    0.55  0.220 / 0.350
G24     124.4          10.3                5.1 +/-   40.44      14.2 +/-   40.44  0.120 / 0.250
G26     257.2          11.2               14.1 +/-    1.41      38.3 +/-    1.41  0.110 / 0.300
G27     321.4          12.8                3.3 +/-   20.83       8.8 +/-   20.83  0.100 / 0.270
G29     167.4          40.2               13.2 +/-    1.81      19.2 +/-    1.81  0.130 / 0.180