PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/15-20:13:10
G10     267.8          40.1               13.2 +/-    1.36      19.1 +/-    1.36  0.120 / 0.160
G13     41.3           16.9               10.1 +/-    1.15      24.1 +/-    1.15  0.100 / 0.170
G15     59.0           48.9               11.5 +/-    1.05      14.7 +/-    1.05  0.050 / 0.040
G16     278.3          12.5               10.5 +/-    3.37      27.6 +/-    3.37  0.040 / 0.050
G20     300.3          61.0               12.0 +/-    0.60      13.5 +/-    0.60  0.090 / 0.240
G21     1.9            71.4               13.1 +/-    0.88      13.7 +/-    0.88  0.100 / 0.310
G24     121.8          14.3               13.3 +/-    2.12      33.6 +/-    2.12  0.180 / 0.460
G27     318.8          18.8               11.3 +/-    0.94      25.5 +/-    0.94  0.160 / 0.500
G29     167.3          31.6               14.9 +/-    0.71      25.2 +/-    0.71  0.050 / 0.050