PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/28-21:27:50
G08     265.5          18.4                9.1 +/-    1.80      20.9 +/-    1.80  0.040 / 0.050
G10     61.6           58.0                9.3 +/-    0.50      10.8 +/-    0.50  0.050 / 0.050
G11     310.9          18.0                9.3 +/-    2.62      21.4 +/-    2.62  0.150 / 0.270
G14     266.5          66.3               11.2 +/-    0.66      12.1 +/-    0.66  0.160 / 0.230
G18     311.8          33.5                6.6 +/-    1.01      10.8 +/-    1.01  0.210 / 0.400
G20     95.3           36.6               10.9 +/-    0.92      16.8 +/-    0.92  0.240 / 0.350
G21     154.5          14.4               10.4 +/-    3.29      26.1 +/-    3.29  0.320 / 0.220
G27     233.4          16.4               10.6 +/-    2.78      25.4 +/-    2.78  0.280 / 0.260
G31     179.1          29.3               11.6 +/-    1.11      20.5 +/-    1.11  0.100 / 0.170
G32     339.8          74.2                9.8 +/-    0.36      10.1 +/-    0.36  0.110 / 0.200