PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-22:43:10
G07     346.9          62.5               11.3 +/-    0.82      12.6 +/-    0.82  0.050 / 0.060
G08     86.7           53.6               11.8 +/-    0.69      14.2 +/-    0.69  0.040 / 0.050
G09     185.5          65.0               13.9 +/-    0.56      15.2 +/-    0.56  0.080 / 0.120
G11     142.3          17.9               13.3 +/-    1.15      30.8 +/-    1.15  0.080 / 0.110
G23     157.5          31.1               12.2 +/-    0.95      20.8 +/-    0.95  0.070 / 0.080
G27     47.1           25.7               10.5 +/-    0.81      20.2 +/-    0.81  0.060 / 0.100
G28     245.5          37.1               13.5 +/-    0.98      20.7 +/-    0.98  0.030 / 0.040
G30     312.4          44.8                9.0 +/-    1.38      12.1 +/-    1.38  0.040 / 0.040