PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/16-16:28:10
G02     216.0          56.5               10.0 +/-    1.15      11.7 +/-    1.15  0.060 / 0.100
G06     57.2           72.8                8.5 +/-    0.84       8.8 +/-    0.84  0.060 / 0.090
G12     319.8          39.8                7.3 +/-    0.99      10.7 +/-    0.99  0.040 / 0.070
G17     57.5           31.6                6.7 +/-    0.46      11.3 +/-    0.46  0.040 / 0.080
G19     34.1           52.4                7.4 +/-    0.41       9.1 +/-    0.41  0.040 / 0.030
G24     264.2          42.1                7.1 +/-    1.05      10.0 +/-    1.05  0.040 / 0.040
G28     121.9          14.5                8.9 +/-    2.16      22.3 +/-    2.16  0.030 / 0.060