PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/28-17:58:00
G10     258.8          33.3                8.9 +/-    1.78      14.5 +/-    1.78  0.140 / 0.290
G13     46.3           23.9                7.7 +/-    2.16      15.4 +/-    2.16  0.110 / 0.310
G15     73.8           56.6                8.8 +/-    0.93      10.3 +/-    0.93  0.230 / 0.350
G16     287.0          14.3                7.6 +/-    1.39      19.1 +/-    1.39  0.240 / 0.420
G20     283.3          56.3                8.8 +/-    2.70      10.4 +/-    2.70  0.040 / 0.040
G21     349.4          67.2                8.6 +/-    0.46       9.3 +/-    0.46  0.050 / 0.040
G24     123.7          10.0               -7.6 +/-   36.27     -21.1 +/-   36.27  0.230 / 0.180
G26     260.6          11.6                5.5 +/-   19.53      14.7 +/-   19.53  0.320 / 0.270
G27     322.1          10.9               -8.4 +/-   28.56     -22.9 +/-   28.56  0.090 / 0.150
G29     166.3          39.7               10.1 +/-    1.42      14.8 +/-    1.42  0.070 / 0.350