PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/11-15:57:40
G02     204.3          32.8               14.2 +/-    1.57      23.6 +/-    1.57  0.100 / 0.110
G06     152.3          71.0               13.3 +/-    0.67      14.0 +/-    0.67  0.090 / 0.100
G12     309.2          19.7                8.6 +/-    1.26      19.1 +/-    1.26  0.080 / 0.180
G17     37.6           47.8               10.1 +/-    1.38      13.1 +/-    1.38  0.260 / 0.270
G19     353.9          66.3               10.2 +/-    0.46      11.1 +/-    0.46  0.040 / 0.030
G24     295.7          39.5               10.5 +/-    7.41      15.4 +/-    7.41  0.030 / 0.030
G28     102.9          31.0               11.2 +/-    0.79      19.2 +/-    0.79  0.030 / 0.040