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               10.8 +/-    2.13      20.6 +/-    2.13  0.230 / 0.690
G13     56.0           30.5                9.6 +/-    0.91      16.6 +/-    0.91  0.220 / 0.580
G15     93.5           58.0               11.0 +/-    0.52      12.7 +/-    0.52  0.070 / 0.130
G16     299.1          15.6                6.4 +/-    1.74      15.6 +/-    1.74  0.070 / 0.140
G20     266.0          48.8               10.5 +/-    1.14      13.4 +/-    1.14  0.030 / 0.060
G21     329.5          57.1                8.9 +/-    0.78      10.4 +/-    0.78  0.040 / 0.060
G26     271.4          16.7               12.0 +/-    2.46      28.6 +/-    2.46  0.060 / 0.170
G29     162.3          53.8               10.6 +/-    0.89      12.8 +/-    0.89  0.070 / 0.170