PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/24-13:58:10
G02     204.0          36.1               12.7 +/-    2.07      19.7 +/-    2.07  0.060 / 0.080
G06     159.5          70.7               10.5 +/-    1.08      11.0 +/-    1.08  0.110 / 0.100
G12     308.9          16.7                5.9 +/-    2.40      14.2 +/-    2.40  0.120 / 0.280
G17     40.5           45.5                5.4 +/-    0.52       7.3 +/-    0.52  0.110 / 0.200
G19     10.6           62.8                6.3 +/-    0.68       7.0 +/-    0.68  0.040 / 0.030
G24     297.3          38.1                8.1 +/-    1.16      12.1 +/-    1.16  0.040 / 0.030
G28     105.2          29.1                8.6 +/-    0.99      15.3 +/-    0.99  0.040 / 0.070