PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/09-17:42:40
G02     200.9          20.4               15.5 +/-    1.19      33.8 +/-    1.19  0.160 / 0.330
G06     168.1          56.3               15.5 +/-    1.07      18.2 +/-    1.07  0.240 / 0.350
G13     226.4          12.4               11.7 +/-    3.17      30.9 +/-    3.17  0.080 / 0.240
G17     22.2           59.5               11.5 +/-    0.49      13.2 +/-    0.49  0.080 / 0.140
G19     316.8          70.4               11.9 +/-    0.62      12.6 +/-    0.62  0.090 / 0.110
G24     308.7          31.2               11.9 +/-    1.14      20.3 +/-    1.14  0.100 / 0.110
G28     89.0           39.2               13.6 +/-    0.45      20.1 +/-    0.45  0.040 / 0.090
G30     157.5          14.3               14.0 +/-    2.69      35.4 +/-    2.69  0.040 / 0.090