PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/21-00:12:50
G08     262.0          16.5                9.6 +/-    2.20      23.0 +/-    2.20  0.350 / 0.440
G10     69.0           56.3                7.0 +/-    0.56       8.2 +/-    0.56  0.350 / 0.500
G11     308.0          20.3                6.7 +/-    1.62      14.7 +/-    1.62  0.120 / 0.330
G14     275.7          67.9                7.4 +/-    0.76       7.9 +/-    0.76  0.250 / 0.440
G18     309.5          36.2                8.3 +/-    1.84      12.9 +/-    1.84  0.040 / 0.060
G20     99.3           33.8                7.7 +/-    0.91      12.4 +/-    0.91  0.040 / 0.070
G21     155.4          11.3                8.3 +/-    3.24      22.4 +/-    3.24  0.130 / 0.290
G27     229.7          13.4               10.3 +/-    4.59      26.7 +/-    4.59  0.140 / 0.350
G31     177.1          35.1               10.0 +/-    0.86      15.9 +/-    0.86  0.100 / 0.290
G32     355.3          71.5                7.5 +/-    0.59       7.9 +/-    0.59  0.130 / 0.280