PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/13-00:12:40
G01     122.5          15.4                9.2 +/-    2.64      22.6 +/-    2.64  0.040 / 0.060
G07     69.1           68.3                7.0 +/-    1.03       7.5 +/-    1.03  0.050 / 0.070
G08     47.7           36.8                5.8 +/-    0.76       9.0 +/-    0.76  0.040 / 0.070
G09     178.3          31.1                8.1 +/-    1.46      13.8 +/-    1.46  0.040 / 0.060
G11     115.1          37.8                9.2 +/-    1.20      13.8 +/-    1.20  0.090 / 0.260
G13     319.7          15.5                3.5 +/-    1.96       8.7 +/-    1.96  0.100 / 0.210
G17     201.3          19.4               10.7 +/-    1.04      23.8 +/-    1.04  0.130 / 0.190
G28     286.7          56.1                8.3 +/-    0.92       9.7 +/-    0.92  0.090 / 0.180
G30     349.8          68.4                6.1 +/-    0.98       6.5 +/-    0.98  0.060 / 0.110