PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/23-22:43:00
G10     265.3          37.3               10.2 +/-    1.10      15.5 +/-    1.10  0.160 / 0.230
G13     42.6           19.3                6.9 +/-    3.14      15.5 +/-    3.14  0.220 / 0.170
G15     64.2           53.3                7.7 +/-    0.99       9.3 +/-    0.99  0.040 / 0.030
G16     278.7          12.9               10.1 +/-    2.44      26.4 +/-    2.44  0.050 / 0.040
G20     266.0          27.5               14.0 +/-    1.13      25.9 +/-    1.13  0.110 / 0.290
G21     355.9          70.2                8.5 +/-    0.92       9.0 +/-    0.92  0.120 / 0.350
G24     120.0          13.4                8.2 +/-    2.33      21.3 +/-    2.33  0.140 / 0.290
G27     319.5          17.3                8.5 +/-    2.10      19.9 +/-    2.10  0.180 / 0.480
G29     168.2          34.1                9.8 +/-    1.66      15.8 +/-    1.66  0.140 / 0.460