PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/09-14:57:40
G01     42.7           18.5                7.9 +/-    3.33      18.0 +/-    3.33  0.090 / 0.100
G06     173.6          37.8               13.8 +/-    0.95      20.8 +/-    0.95  0.070 / 0.100
G13     239.9          23.9               11.5 +/-    2.33      23.0 +/-    2.33  0.130 / 0.180
G15     276.8          12.6                7.2 +/-    1.25      19.0 +/-    1.25  0.120 / 0.270
G17     358.3          72.1               10.4 +/-    0.72      10.9 +/-    0.72  0.150 / 0.210
G19     263.9          64.5               10.7 +/-    1.02      11.7 +/-    1.02  0.070 / 0.210
G24     316.9          18.3                5.9 +/-    2.42      13.6 +/-    2.42  0.240 / 0.440
G28     67.5           48.4                9.6 +/-    0.77      12.4 +/-    0.77  0.270 / 0.170
G30     154.3          31.8               12.3 +/-    0.89      20.7 +/-    0.89  0.080 / 0.080