PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/04-15:12:30
G02     202.3          26.4                9.3 +/-    1.26      17.5 +/-    1.26  0.040 / 0.110
G06     164.4          62.9               11.1 +/-    1.51      12.3 +/-    1.51  0.040 / 0.090
G17     25.5           56.8                9.2 +/-    0.38      10.8 +/-    0.38  0.060 / 0.150
G19     350.9          68.1                8.1 +/-    0.43       8.6 +/-    0.43  0.060 / 0.120
G24     304.1          34.1                7.9 +/-    0.74      12.8 +/-    0.74  0.030 / 0.040
G28     92.4           40.4                8.6 +/-    0.69      12.5 +/-    0.69  0.040 / 0.040