PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/15-20:27:40
G10     275.1          43.9               10.9 +/-    1.57      14.9 +/-    1.57  0.130 / 0.160
G13     38.9           12.0                9.6 +/-    2.60      25.6 +/-    2.60  0.110 / 0.150
G15     53.4           43.9               11.4 +/-    1.26      15.6 +/-    1.26  0.040 / 0.050
G16     272.5          10.2                8.9 +/-    2.50      24.8 +/-    2.50  0.040 / 0.040
G20     313.5          63.2               12.9 +/-    1.12      14.2 +/-    1.12  0.160 / 0.370
G21     19.7           75.0               13.5 +/-    0.92      14.0 +/-    0.92  0.220 / 0.420
G24     116.4          17.9               14.0 +/-    2.29      32.5 +/-    2.29  0.100 / 0.680
G27     315.6          23.6                9.4 +/-    1.74      19.0 +/-    1.74  0.110 / 0.700
G29     167.9          25.0               15.6 +/-    1.78      30.5 +/-    1.78  0.030 / 0.060
G32     204.9          15.4               16.5 +/-    5.05      40.6 +/-    5.05  0.030 / 0.050