PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/30-17:57:50
G05     49.4           16.4               10.7 +/-    1.36      25.6 +/-    1.36  0.050 / 0.070
G10     238.2          16.8               16.9 +/-    1.71      40.4 +/-    1.71  0.040 / 0.080
G13     70.2           34.8               13.4 +/-    0.83      21.4 +/-    0.83  0.120 / 0.320
G15     117.8          54.5               13.1 +/-    0.16      15.7 +/-    0.16  0.120 / 0.340
G16     310.5          13.9               11.5 +/-    1.95      29.3 +/-    1.95  0.070 / 0.130
G20     252.3          41.0               14.6 +/-    2.78      20.9 +/-    2.78  0.050 / 0.120
G21     316.5          48.6               12.6 +/-    0.64      16.2 +/-    0.64  0.030 / 0.040
G26     283.9          19.8               11.5 +/-    1.55      25.4 +/-    1.55  0.030 / 0.040
G29     156.2          69.4               13.6 +/-    0.70      14.5 +/-    0.70  0.110 / 0.210