PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/19-13:58:00
G02     201.4          19.7                8.5 +/-    2.59      18.9 +/-    2.59  0.050 / 0.050
G06     168.2          56.2                8.0 +/-    0.72       9.4 +/-    0.72  0.040 / 0.050
G13     224.7          12.2                6.1 +/-    2.21      16.2 +/-    2.21  0.110 / 0.620
G17     18.7           61.2                6.1 +/-    0.58       6.8 +/-    0.58  0.170 / 0.490
G19     333.6          70.9                5.6 +/-    0.52       5.9 +/-    0.52  0.130 / 0.150
G24     309.1          29.9                5.5 +/-    1.68       9.7 +/-    1.68  0.110 / 0.150
G28     85.0           44.2                6.4 +/-    0.78       8.7 +/-    0.78  0.050 / 0.100
G30     157.4          13.3                8.1 +/-    2.48      20.9 +/-    2.48  0.040 / 0.080