PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/06-15:42:50
G02     210.1          49.4               18.7 +/-    1.54      23.7 +/-    1.54  0.080 / 0.090
G06     100.5          79.8               18.0 +/-    0.73      18.3 +/-    0.73  0.080 / 0.090
G12     315.6          28.3               16.7 +/-    1.16      30.4 +/-    1.16  0.060 / 0.130
G17     52.2           35.7               14.6 +/-    0.80      22.9 +/-    0.80  0.060 / 0.130
G19     31.6           53.4               17.2 +/-    1.00      20.8 +/-    1.00  0.020 / 0.030
G24     279.9          41.9               14.7 +/-    1.31      20.7 +/-    1.31  0.030 / 0.030
G28     116.8          19.6               15.5 +/-    1.59      34.4 +/-    1.59  0.050 / 0.090