PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/26-15:43:10
G01     70.8           32.7                9.1 +/-    1.11      15.1 +/-    1.11  0.070 / 0.110
G07     137.1          27.8                9.0 +/-    1.71      16.6 +/-    1.71  0.080 / 0.120
G11     52.7           28.0                6.1 +/-    0.84      11.1 +/-    0.84  0.040 / 0.080
G13     277.1          36.9               11.4 +/-    1.69      17.5 +/-    1.69  0.030 / 0.040
G15     306.0          13.7                8.4 +/-    1.77      21.7 +/-    1.77  0.030 / 0.030
G17     234.5          71.6               10.6 +/-    1.07      11.1 +/-    1.07  0.030 / 0.040
G19     224.1          43.9               13.6 +/-    2.71      18.6 +/-    2.71  0.050 / 0.070
G28     19.1           59.2               10.0 +/-    0.61      11.5 +/-    0.61  0.060 / 0.080
G30     134.0          64.6                9.0 +/-    1.09       9.8 +/-    1.09  0.050 / 0.110