PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/14-17:57:40
G02     204.7          36.3               16.1 +/-    1.50      25.0 +/-    1.50  0.110 / 0.250
G06     148.1          73.2               13.6 +/-    0.83      14.2 +/-    0.83  0.120 / 0.220
G12     310.2          20.5               12.1 +/-    1.90      26.2 +/-    1.90  0.060 / 0.150
G17     38.6           47.1               10.5 +/-    0.42      13.8 +/-    0.42  0.060 / 0.170
G19     1.1            64.7               12.3 +/-    0.91      13.5 +/-    0.91  0.070 / 0.080
G24     293.3          40.2               12.9 +/-    1.28      18.7 +/-    1.28  0.060 / 0.090
G28     105.4          29.2               11.7 +/-    1.20      20.9 +/-    1.20  0.060 / 0.100