PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/26-00:12:30
G10     252.9          28.6               11.0 +/-    2.04      19.9 +/-    2.04  0.040 / 0.040
G13     51.2           28.3                7.5 +/-    1.47      13.6 +/-    1.47  0.050 / 0.040
G15     85.2           58.4                9.2 +/-    0.56      10.6 +/-    0.56  0.130 / 0.270
G16     291.6          15.7                8.4 +/-    1.23      20.5 +/-    1.23  0.120 / 0.320
G20     261.3          34.1                8.6 +/-    2.83      14.0 +/-    2.83  0.130 / 0.160
G21     335.7          61.4                9.1 +/-    0.67      10.2 +/-    0.67  0.150 / 0.240
G26     263.8          14.6               10.1 +/-    1.82      25.4 +/-    1.82  0.030 / 0.030
G29     165.9          48.1               10.4 +/-    0.60      13.4 +/-    0.60  0.030 / 0.030