PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/13-20:42:30
G10     278.9          45.6               11.0 +/-    1.12      14.6 +/-    1.12  0.050 / 0.050
G13     38.0           9.6                 6.6 +/-    2.70      18.6 +/-    2.70  0.060 / 0.050
G15     51.4           41.4                9.3 +/-    0.98      13.2 +/-    0.98  0.100 / 0.440
G20     320.2          64.0               10.9 +/-    0.79      12.0 +/-    0.79  0.090 / 0.370
G21     31.0           76.3               11.6 +/-    0.54      11.9 +/-    0.54  0.060 / 0.080
G24     113.7          19.6               12.5 +/-    1.77      27.8 +/-    1.77  0.060 / 0.060
G27     313.7          25.8                8.7 +/-    2.05      16.6 +/-    2.05  0.220 / 0.450
G29     168.1          21.9               12.0 +/-    1.40      25.3 +/-    1.40  0.180 / 0.370
G32     205.5          18.2               11.7 +/-    3.10      26.9 +/-    3.10  0.180 / 0.160