PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/17-08:12:40
G01     63.1           31.4                5.2 +/-    0.61       8.8 +/-    0.61  0.040 / 0.050
G06     183.2          10.0              -19.7 +/-   16.86     -54.9 +/-   16.86  0.030 / 0.050
G07     140.9          23.9                7.9 +/-    1.21      15.8 +/-    1.21  0.050 / 0.150
G11     49.7           25.3                5.4 +/-    0.95      10.4 +/-    0.95  0.070 / 0.170
G13     267.9          35.8                7.4 +/-    1.27      11.5 +/-    1.27  0.100 / 0.280
G15     296.4          16.5                3.7 +/-    1.50       8.8 +/-    1.50  0.070 / 0.230
G17     252.9          76.1                7.7 +/-    0.82       7.9 +/-    0.82  0.020 / 0.030
G19     230.3          49.8                6.9 +/-    1.77       8.7 +/-    1.77  0.020 / 0.030
G28     32.2           57.2                5.2 +/-    0.58       6.1 +/-    0.58  0.180 / 0.360
G30     141.1          54.6                8.7 +/-    0.93      10.5 +/-    0.93  0.060 / 0.090