PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/19-21:42:50
G10     257.7          33.7               12.1 +/-    0.95      19.8 +/-    0.95  0.040 / 0.050
G13     46.8           23.9                8.7 +/-    0.76      17.4 +/-    0.76  0.040 / 0.050
G15     72.2           55.1               10.7 +/-    0.45      12.8 +/-    0.45  0.140 / 0.580
G16     288.0          14.9                9.0 +/-    1.81      22.4 +/-    1.81  0.130 / 0.430
G20     281.9          55.7               12.9 +/-    0.54      15.2 +/-    0.54  0.130 / 0.320
G21     343.7          64.8                9.4 +/-    1.00      10.3 +/-    1.00  0.200 / 0.450
G26     261.1          12.2               13.2 +/-    2.76      34.9 +/-    2.76  0.060 / 0.210
G27     322.1          10.8               -7.4 +/-   34.55     -20.2 +/-   34.55  0.060 / 0.230
G29     165.5          41.5               12.5 +/-    1.41      17.8 +/-    1.41  0.050 / 0.070