PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/16-23:28:10
G10     244.7          23.1               11.7 +/-    1.89      23.9 +/-    1.89  0.050 / 0.050
G13     60.0           32.3                7.7 +/-    1.27      12.9 +/-    1.27  0.060 / 0.050
G15     100.2          57.5               11.5 +/-    0.50      13.4 +/-    0.50  0.110 / 0.110
G16     303.5          15.0                6.9 +/-    1.67      17.2 +/-    1.67  0.070 / 0.090
G20     261.0          45.7               11.3 +/-    2.53      15.1 +/-    2.53  0.060 / 0.110
G21     325.5          54.7                9.5 +/-    0.54      11.3 +/-    0.54  0.070 / 0.110
G26     275.5          17.8                9.6 +/-    0.78      22.4 +/-    0.78  0.030 / 0.040
G29     160.4          57.4               11.7 +/-    0.69      13.6 +/-    0.69  0.040 / 0.040