PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/14-22:57:50
G07     348.4          62.9                7.2 +/-    0.78       8.0 +/-    0.78  0.050 / 0.120
G08     85.0           53.5                7.5 +/-    0.56       9.1 +/-    0.56  0.050 / 0.130
G09     185.1          64.1                9.8 +/-    0.58      10.8 +/-    0.58  0.040 / 0.050
G11     141.7          18.5                9.0 +/-    1.25      20.6 +/-    1.25  0.030 / 0.040
G23     157.8          30.4                8.3 +/-    0.91      14.4 +/-    0.91  0.050 / 0.090
G27     46.6           25.2                7.5 +/-    1.21      14.6 +/-    1.21  0.050 / 0.100
G28     246.3          37.7                8.7 +/-    1.50      13.2 +/-    1.50  0.040 / 0.060
G30     313.3          45.6                6.6 +/-    0.93       8.8 +/-    0.93  0.040 / 0.050