PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/14-22:57:30
G07     348.4          62.9                8.8 +/-    0.51       9.8 +/-    0.51  0.110 / 0.080
G08     85.0           53.5                9.0 +/-    1.30      10.9 +/-    1.30  0.090 / 0.090
G09     185.1          64.1                8.9 +/-    0.86       9.8 +/-    0.86  0.180 / 0.100
G11     141.7          18.5                9.6 +/-    1.16      22.0 +/-    1.16  0.220 / 0.090
G23     157.8          30.4                8.8 +/-    1.06      15.3 +/-    1.06  0.030 / 0.040
G27     46.6           25.2                8.0 +/-    2.09      15.5 +/-    2.09  0.030 / 0.040
G28     246.3          37.7                9.1 +/-    1.86      13.8 +/-    1.86  0.040 / 0.040
G30     313.3          45.6                9.5 +/-    0.71      12.7 +/-    0.71  0.030 / 0.040