PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/25-23:27:40
G10     258.9          34.4               11.7 +/-    1.94      18.8 +/-    1.94  0.300 / 0.300
G13     46.0           23.2                9.4 +/-    1.85      19.2 +/-    1.85  0.180 / 0.260
G15     69.5           53.9                9.4 +/-    1.68      11.3 +/-    1.68  0.040 / 0.040
G16     287.4          14.5                6.6 +/-    1.85      16.5 +/-    1.85  0.040 / 0.040
G20     282.9          55.7               11.2 +/-    2.72      13.3 +/-    2.72  0.090 / 0.160
G21     345.8          65.8               11.8 +/-    1.80      12.8 +/-    1.80  0.140 / 0.220
G26     260.3          11.7               10.3 +/-    6.18      27.7 +/-    6.18  0.040 / 0.040
G27     321.8          11.6                1.3 +/-   31.62       3.4 +/-   31.62  0.040 / 0.040
G29     165.5          39.6               12.9 +/-    1.34      18.9 +/-    1.34  0.200 / 0.390