PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/16-15:43:10
G01     313.1          27.7                6.6 +/-    1.94      12.2 +/-    1.94  0.110 / 0.200
G10     97.0           45.9                7.9 +/-    1.04      10.5 +/-    1.04  0.140 / 0.270
G11     293.3          25.9                5.9 +/-    1.33      11.4 +/-    1.33  0.150 / 0.230
G14     332.0          69.9                6.3 +/-    0.80       6.7 +/-    0.80  0.160 / 0.270
G22     306.9          21.0                7.1 +/-    1.73      15.2 +/-    1.73  0.030 / 0.030
G25     90.5           14.0               11.0 +/-    1.46      28.0 +/-    1.46  0.040 / 0.030
G31     171.2          56.7                9.7 +/-    0.54      11.4 +/-    0.54  0.040 / 0.050
G32     27.9           57.7                6.8 +/-    1.14       7.9 +/-    1.14  0.040 / 0.040