PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/07-13:57:40
G02     215.4          55.8                7.4 +/-    1.02       8.7 +/-    1.02  0.050 / 0.080
G06     61.3           74.8                7.7 +/-    0.46       7.9 +/-    0.46  0.070 / 0.080
G12     317.6          34.7                5.2 +/-    1.30       8.3 +/-    1.30  0.080 / 0.260
G17     53.9           35.4                5.7 +/-    0.96       9.0 +/-    0.96  0.080 / 0.190
G19     38.9           48.8                5.9 +/-    0.70       7.6 +/-    0.70  0.050 / 0.080
G24     269.0          41.3                6.3 +/-    1.03       8.9 +/-    1.03  0.040 / 0.080
G28     119.3          21.2                7.9 +/-    1.06      17.0 +/-    1.06  0.050 / 0.050