PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/25-20:27:40
G10     265.5          37.5               11.3 +/-    1.51      17.1 +/-    1.51  0.040 / 0.040
G13     42.5           19.1                9.1 +/-    3.91      20.5 +/-    3.91  0.040 / 0.040
G15     65.1           54.2               10.0 +/-    0.97      12.0 +/-    0.97  0.160 / 0.220
G16     279.9          12.7                8.6 +/-    2.31      22.6 +/-    2.31  0.170 / 0.240
G20     294.8          59.7               10.3 +/-    1.04      11.7 +/-    1.04  0.150 / 0.390
G21     0.2            71.0               11.2 +/-    0.70      11.8 +/-    0.70  0.190 / 0.480
G24     119.0          13.7               10.9 +/-    2.20      28.0 +/-    2.20  0.150 / 0.340
G27     319.8          16.7               10.0 +/-    2.41      23.9 +/-    2.41  0.120 / 0.260
G29     167.8          33.1               12.1 +/-    1.39      19.9 +/-    1.39  0.200 / 0.340