PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/25-16:12:50
G01     58.1           29.5               10.5 +/-    1.18      18.6 +/-    1.18  0.080 / 0.250
G06     179.5          17.0               14.8 +/-    1.48      35.0 +/-    1.48  0.090 / 0.230
G07     142.6          17.3               11.0 +/-    2.00      25.9 +/-    2.00  0.080 / 0.140
G11     46.7           19.4                8.7 +/-    3.31      19.5 +/-    3.31  0.070 / 0.120
G13     262.7          34.3               14.5 +/-    0.72      23.4 +/-    0.72  0.040 / 0.040
G15     295.8          15.4                9.1 +/-    2.31      22.4 +/-    2.31  0.050 / 0.040
G17     276.5          79.4               13.6 +/-    0.72      13.9 +/-    0.72  0.070 / 0.130
G19     235.3          54.5               14.1 +/-    2.69      16.8 +/-    2.69  0.070 / 0.110
G28     38.7           56.0               13.4 +/-    1.72      15.8 +/-    1.72  0.020 / 0.030
G30     144.6          53.1               13.4 +/-    0.65      16.3 +/-    0.65  0.020 / 0.020