PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/24-21:27:30
G07     315.4          50.4                9.8 +/-    1.05      12.3 +/-    1.05  0.100 / 0.320
G08     122.5          45.8               13.4 +/-    1.37      17.9 +/-    1.37  0.120 / 0.260
G09     263.3          82.5               11.3 +/-    1.01      11.4 +/-    1.01  0.100 / 0.230
G16     43.2           18.1                7.4 +/-    0.94      17.0 +/-    0.94  0.100 / 0.210
G23     149.1          53.6               10.9 +/-    1.30      13.2 +/-    1.30  0.040 / 0.050
G27     68.4           36.0                8.6 +/-    0.76      13.4 +/-    0.76  0.050 / 0.060
G28     228.5          19.7               12.4 +/-    4.33      27.4 +/-    4.33  0.050 / 0.090
G30     293.7          30.1                9.6 +/-    2.28      16.8 +/-    2.28  0.040 / 0.080