PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/18-22:43:00
G07     349.5          63.2               10.6 +/-    0.41      11.8 +/-    0.41  0.080 / 0.100
G08     84.2           53.5                9.4 +/-    0.76      11.4 +/-    0.76  0.070 / 0.100
G09     184.7          63.4               11.1 +/-    1.09      12.3 +/-    1.09  0.030 / 0.040
G11     141.4          18.9               11.1 +/-    1.81      25.1 +/-    1.81  0.040 / 0.050
G23     157.8          29.6               12.3 +/-    1.10      21.7 +/-    1.10  0.150 / 0.090
G27     46.2           24.8                8.1 +/-    2.18      15.9 +/-    2.18  0.110 / 0.140
G28     246.9          38.1               11.8 +/-    1.90      17.7 +/-    1.90  0.110 / 0.250
G30     313.6          45.8                9.5 +/-    0.68      12.7 +/-    0.68  0.190 / 0.270