PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/22-09:57:30
G08     310.2          19.1                2.9 +/-    1.06       6.5 +/-    1.06  0.040 / 0.040
G10     331.0          60.0                3.1 +/-    0.47       3.5 +/-    0.47  0.040 / 0.040
G14     216.9          30.2                5.9 +/-    2.76      10.2 +/-    2.76  0.030 / 0.030
G15     46.7           10.7                2.7 +/-    2.78       7.3 +/-    2.78  0.040 / 0.030
G20     35.3           60.8                2.7 +/-    0.95       3.1 +/-    0.95  0.080 / 0.090
G21     133.0          55.3                7.1 +/-    0.38       8.4 +/-    0.38  0.080 / 0.080
G24     73.9           29.3                4.7 +/-    1.11       8.4 +/-    1.11  0.140 / 0.160
G27     279.3          37.1                4.2 +/-    0.85       6.5 +/-    0.85  0.090 / 0.180
G32     221.8          46.1                5.7 +/-    2.10       7.5 +/-    2.10  0.070 / 0.070