PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/26-20:28:00
G10     267.5          38.7               11.1 +/-    1.54      16.5 +/-    1.54  0.040 / 0.030
G13     41.6           17.7               10.5 +/-    2.73      24.4 +/-    2.73  0.040 / 0.040
G15     62.6           52.9               11.3 +/-    0.89      13.8 +/-    0.89  0.130 / 0.130
G16     278.2          12.1               10.9 +/-    2.48      29.1 +/-    2.48  0.130 / 0.130
G20     298.3          60.5               10.5 +/-    0.97      11.9 +/-    0.97  0.240 / 0.520
G21     4.7            72.1               12.4 +/-    0.39      13.0 +/-    0.39  0.330 / 0.750
G24     117.4          14.7               14.6 +/-    2.97      36.6 +/-    2.97  0.120 / 0.280
G27     319.0          18.2               10.0 +/-    1.99      23.1 +/-    1.99  0.150 / 0.250
G29     168.0          31.2               12.3 +/-    1.71      21.0 +/-    1.71  0.080 / 0.280