PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/18-00:27:10
G02     209.8          53.3               15.0 +/-    0.62      18.2 +/-    0.62  0.080 / 0.110
G06     92.4           79.4               13.4 +/-    0.55      13.6 +/-    0.55  0.080 / 0.120
G12     315.6          28.6               11.0 +/-    1.27      19.9 +/-    1.27  0.030 / 0.020
G19     28.2           55.1               10.7 +/-    1.70      12.7 +/-    1.70  0.030 / 0.020
G24     276.9          42.4               13.3 +/-    1.93      18.7 +/-    1.93  0.100 / 0.080
G28     117.1          19.2               12.2 +/-    2.05      27.3 +/-    2.05  0.100 / 0.080