PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/18-00:13:00
G10     264.5          37.9               10.9 +/-    2.18      16.5 +/-    2.18  0.040 / 0.040
G13     42.8           19.3                8.2 +/-    2.75      18.4 +/-    2.75  0.040 / 0.040
G15     61.7           50.3                9.4 +/-    0.97      11.9 +/-    0.97  0.300 / 0.280
G16     282.3          13.2                7.9 +/-    1.20      20.5 +/-    1.20  0.240 / 0.280
G20     292.3          58.7                9.4 +/-    1.31      10.8 +/-    1.31  0.100 / 0.100
G21     355.8          69.6                8.9 +/-    0.63       9.5 +/-    0.63  0.090 / 0.070
G24     123.4          12.6               10.7 +/-    2.90      28.1 +/-    2.90  0.100 / 0.330
G27     320.2          16.1                8.0 +/-    2.64      19.3 +/-    2.64  0.110 / 0.220
G29     166.4          33.4               10.8 +/-    0.87      17.7 +/-    0.87  0.030 / 0.040