PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/17-12:43:00
G01     116.8          19.4                6.0 +/-    1.22      13.5 +/-    1.22  0.140 / 0.200
G07     89.9           62.6                4.8 +/-    0.41       5.3 +/-    0.41  0.170 / 0.250
G08     43.7           27.6                3.1 +/-    1.30       5.8 +/-    1.30  0.120 / 0.250
G09     174.8          21.4                5.5 +/-    2.53      11.7 +/-    2.53  0.240 / 0.300
G11     100.8          39.2                5.0 +/-    0.50       7.4 +/-    0.50  0.030 / 0.040
G13     317.6          19.4                2.7 +/-    1.49       6.1 +/-    1.49  0.030 / 0.020
G17     201.6          29.4                4.0 +/-    1.70       7.1 +/-    1.70  0.030 / 0.030
G28     297.6          58.2                2.0 +/-    0.95       2.3 +/-    0.95  0.020 / 0.030
G30     346.8          68.8                2.8 +/-    0.38       3.0 +/-    0.38  0.100 / 0.120