PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/07-19:57:40
G10     246.8          25.2               12.3 +/-    1.42      23.9 +/-    1.42  0.040 / 0.050
G13     57.1           31.0                9.8 +/-    1.93      16.8 +/-    1.93  0.040 / 0.050
G15     97.6           58.4               10.9 +/-    1.43      12.5 +/-    1.43  0.070 / 0.150
G16     299.8          15.8                7.6 +/-    1.82      18.4 +/-    1.82  0.060 / 0.150
G20     265.0          48.6               10.1 +/-    3.79      13.0 +/-    3.79  0.030 / 0.040
G21     328.2          56.3               10.1 +/-    0.61      11.9 +/-    0.61  0.040 / 0.030
G26     272.3          17.1                9.6 +/-    2.80      22.7 +/-    2.80  0.150 / 0.660
G29     162.1          55.7               11.2 +/-    0.74      13.3 +/-    0.74  0.160 / 0.440