PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/28-00:12:30
G10     286.8          48.8               12.5 +/-    3.55      16.0 +/-    3.55  0.090 / 0.130
G15     48.2           35.3                8.7 +/-    1.13      13.7 +/-    1.13  0.110 / 0.090
G20     331.3          64.7               11.7 +/-    0.81      12.8 +/-    0.81  0.040 / 0.030
G21     58.6           77.3               11.9 +/-    0.43      12.1 +/-    0.43  0.040 / 0.040
G24     107.2          22.9               10.5 +/-    2.05      21.5 +/-    2.05  0.060 / 0.070
G27     309.3          29.5               11.3 +/-    0.96      19.9 +/-    0.96  0.060 / 0.070
G29     167.7          15.0               14.3 +/-    1.83      35.5 +/-    1.83  0.180 / 0.240
G32     207.4          22.8               15.0 +/-    1.70      30.9 +/-    1.70  0.190 / 0.180