PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/10-09:12:30
G10     308.3          54.9                6.1 +/-    1.25       7.3 +/-    1.25  0.280 / 0.370
G14     213.0          15.5                6.5 +/-    2.46      16.0 +/-    2.46  0.290 / 0.370
G15     45.5           20.9                3.2 +/-    2.29       7.0 +/-    2.29  0.090 / 0.080
G20     65.6           35.1                5.5 +/-    2.28       8.7 +/-    2.28  0.070 / 0.070
G21     115.8          68.5                8.1 +/-    0.80       8.6 +/-    0.80  0.090 / 0.090
G24     89.6           28.8                6.4 +/-    1.28      11.5 +/-    1.28  0.070 / 0.090
G27     291.1          37.0               10.6 +/-    2.42      16.2 +/-    2.42  0.030 / 0.030
G32     214.0          40.8                9.7 +/-    0.98      14.0 +/-    0.98  0.030 / 0.030