PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/19-08:43:00
G08     266.9          16.5                7.2 +/-    3.39      17.3 +/-    3.39  0.060 / 0.430
G10     67.1           57.1                3.3 +/-    0.57       3.9 +/-    0.57  0.090 / 0.350
G11     310.0          18.3                4.2 +/-    1.84       9.6 +/-    1.84  0.040 / 0.070
G14     267.5          63.8                0.3 +/-    0.83       0.3 +/-    0.83  0.040 / 0.060
G18     310.8          33.7                5.2 +/-    2.83       8.5 +/-    2.83  0.160 / 0.410
G20     105.1          17.0                5.2 +/-    1.81      12.2 +/-    1.81  0.160 / 0.390
G21     155.3          12.5                1.0 +/-    4.27       2.6 +/-    4.27  0.030 / 0.030
G27     229.0          13.5                3.6 +/-   21.60       9.2 +/-   21.60  0.030 / 0.030
G31     175.9          35.8                6.1 +/-    0.94       9.6 +/-    0.94  0.290 / 0.410
G32     355.4          71.6                4.6 +/-    0.44       4.8 +/-    0.44  0.260 / 0.420