PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/04-14:57:40
G02     201.1          19.7               10.3 +/-    1.35      22.9 +/-    1.35  0.050 / 0.080
G06     168.8          55.4                9.9 +/-    1.05      11.7 +/-    1.05  0.050 / 0.080
G13     225.2          12.7                8.1 +/-    3.96      21.3 +/-    3.96  0.120 / 0.250
G17     17.2           61.9                8.8 +/-    0.47       9.9 +/-    0.47  0.090 / 0.210
G19     331.1          71.1                8.8 +/-    0.51       9.2 +/-    0.51  0.040 / 0.050
G24     309.4          29.7                7.2 +/-    1.72      12.8 +/-    1.72  0.040 / 0.040
G28     84.4           44.3                8.3 +/-    0.66      11.2 +/-    0.66  0.090 / 0.200
G30     157.1          13.3                7.5 +/-    3.80      19.4 +/-    3.80  0.100 / 0.180