PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/27-15:12:30
G01     308.5          32.1                6.1 +/-    1.94      10.3 +/-    1.94  0.100 / 0.150
G10     104.3          41.5                8.7 +/-    0.86      12.3 +/-    0.86  0.090 / 0.130
G11     286.9          26.7                8.4 +/-    1.07      15.7 +/-    1.07  0.040 / 0.050
G14     348.2          68.0                6.2 +/-    0.39       6.6 +/-    0.39  0.040 / 0.040
G22     309.6          26.4                6.3 +/-    1.57      11.8 +/-    1.57  0.100 / 0.170
G25     84.5           16.3                8.7 +/-    2.23      21.1 +/-    2.23  0.140 / 0.160
G31     166.3          64.1               11.0 +/-    0.46      12.1 +/-    0.46  0.030 / 0.030
G32     35.5           52.8                6.8 +/-    1.21       8.3 +/-    1.21  0.030 / 0.030