PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/21-21:28:00
G08     311.8          17.4               10.1 +/-    1.14      23.7 +/-    1.14  0.040 / 0.050
G10     335.5          60.6                9.5 +/-    0.30      10.7 +/-    0.30  0.030 / 0.040
G14     217.7          28.2               12.4 +/-    3.33      22.5 +/-    3.33  0.140 / 0.260
G15     47.0           10.4                9.6 +/-    4.26      26.5 +/-    4.26  0.150 / 0.270
G20     39.8           59.6               10.9 +/-    1.03      12.4 +/-    1.03  0.350 / 0.260
G21     134.3          58.0               12.6 +/-    0.55      14.5 +/-    0.55  0.110 / 0.480
G24     75.5           30.6               10.3 +/-    2.00      17.8 +/-    2.00  0.070 / 0.070
G27     275.3          37.8               10.8 +/-    1.84      16.2 +/-    1.84  0.080 / 0.080
G32     222.5          52.8               12.2 +/-    1.74      14.8 +/-    1.74  0.080 / 0.080