PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/24-21:27:40
G07     315.4          50.4                9.4 +/-    1.08      11.8 +/-    1.08  0.170 / 0.530
G08     122.5          45.8               12.0 +/-    0.67      15.9 +/-    0.67  0.260 / 0.300
G09     263.3          82.5               13.5 +/-    0.83      13.6 +/-    0.83  0.040 / 0.050
G16     43.2           18.1                7.9 +/-    3.31      18.3 +/-    3.31  0.040 / 0.060
G23     149.1          53.6               11.8 +/-    0.75      14.3 +/-    0.75  0.040 / 0.060
G27     68.4           36.0                8.7 +/-    1.17      13.5 +/-    1.17  0.040 / 0.050
G28     228.5          19.7               11.4 +/-    1.99      25.3 +/-    1.99  0.180 / 0.240
G30     293.7          30.1               10.4 +/-    2.02      18.1 +/-    2.02  0.130 / 0.220