PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/13-21:42:50
G10     247.8          26.0               12.3 +/-    1.55      23.6 +/-    1.55  0.040 / 0.060
G13     56.0           30.5                9.0 +/-    2.10      15.6 +/-    2.10  0.040 / 0.060
G15     93.5           58.0               10.7 +/-    1.09      12.4 +/-    1.09  0.080 / 0.200
G16     299.1          15.6                5.9 +/-    1.73      14.6 +/-    1.73  0.070 / 0.130
G20     266.0          48.8               10.1 +/-    3.74      12.9 +/-    3.74  0.030 / 0.030
G21     329.5          57.1                9.5 +/-    0.54      11.1 +/-    0.54  0.040 / 0.040
G26     271.4          16.7               11.5 +/-    1.19      27.3 +/-    1.19  0.270 / 0.280
G29     162.3          53.8               11.6 +/-    0.75      14.0 +/-    0.75  0.190 / 0.390