PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/13-20:42:40
G10     278.9          45.6               11.6 +/-    1.10      15.4 +/-    1.10  0.080 / 0.160
G15     51.4           41.4               10.4 +/-    0.59      14.7 +/-    0.59  0.060 / 0.170
G20     320.2          64.0               10.3 +/-    0.63      11.3 +/-    0.63  0.050 / 0.040
G21     31.0           76.3               12.5 +/-    0.51      12.8 +/-    0.51  0.060 / 0.050
G24     113.7          19.6               13.7 +/-    1.00      30.3 +/-    1.00  0.040 / 0.060
G27     313.7          25.8               10.3 +/-    1.53      19.7 +/-    1.53  0.040 / 0.070
G29     168.1          21.9               12.5 +/-    0.84      26.3 +/-    0.84  0.090 / 0.210
G32     205.5          18.2               14.4 +/-    2.17      33.1 +/-    2.17  0.090 / 0.170