PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/29-13:27:50
G02     202.5          24.1                5.8 +/-    1.54      11.6 +/-    1.54  0.080 / 0.110
G06     164.7          61.8                8.3 +/-    0.69       9.3 +/-    0.69  0.080 / 0.110
G17     25.3           57.0                4.8 +/-    0.56       5.6 +/-    0.56  0.050 / 0.090
G19     348.4          68.7                4.6 +/-    0.31       4.9 +/-    0.31  0.050 / 0.090
G24     305.4          33.1                5.5 +/-    1.39       9.0 +/-    1.39  0.040 / 0.040
G28     90.7           41.5                5.8 +/-    0.96       8.3 +/-    0.96  0.040 / 0.030