PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/11-11:57:50
G01     122.0          15.7                4.1 +/-    1.48      10.0 +/-    1.48  0.030 / 0.030
G07     71.6           67.9                5.8 +/-    0.54       6.2 +/-    0.54  0.030 / 0.030
G08     45.9           32.8                5.3 +/-    1.92       8.8 +/-    1.92  0.030 / 0.030
G09     175.8          27.4                3.3 +/-    1.96       6.1 +/-    1.96  0.030 / 0.030
G11     109.7          38.5                7.0 +/-    0.91      10.5 +/-    0.91  0.130 / 0.300
G13     319.0          17.0                3.8 +/-    0.98       9.0 +/-    0.98  0.230 / 0.300
G17     200.5          22.1                4.8 +/-    1.64      10.0 +/-    1.64  0.160 / 0.260
G18     97.2           19.4                4.6 +/-    1.91      10.3 +/-    1.91  0.160 / 0.280
G28     286.2          55.8                6.7 +/-    2.61       7.9 +/-    2.61  0.090 / 0.210
G30     338.6          64.6                5.8 +/-    0.35       6.3 +/-    0.35  0.110 / 0.200