PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/31-14:42:30
G07     308.8          47.2               10.9 +/-    1.24      14.3 +/-    1.24  0.050 / 0.070
G08     127.9          41.9               12.7 +/-    0.94      17.9 +/-    0.94  0.060 / 0.090
G09     294.1          80.8               10.9 +/-    0.62      11.0 +/-    0.62  0.050 / 0.060
G16     42.4           20.6                7.8 +/-    0.54      17.0 +/-    0.54  0.030 / 0.070
G23     144.9          57.6               12.8 +/-    0.93      14.9 +/-    0.93  0.090 / 0.170
G27     76.3           37.2               10.0 +/-    0.80      15.3 +/-    0.80  0.080 / 0.160
G28     225.2          14.4               11.9 +/-    2.84      30.0 +/-    2.84  0.190 / 0.460
G30     287.6          23.6               11.7 +/-    0.80      23.6 +/-    0.80  0.210 / 0.450