PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/15-08:13:00
G01     67.3           32.3                4.9 +/-    0.83       8.1 +/-    0.83  0.040 / 0.050
G07     139.0          27.3                8.6 +/-    2.25      15.9 +/-    2.25  0.040 / 0.050
G11     51.9           28.0                2.0 +/-    1.14       3.7 +/-    1.14  0.030 / 0.030
G13     272.6          36.6                6.4 +/-    2.03       9.8 +/-    2.03  0.050 / 0.030
G15     299.9          16.0                3.6 +/-    1.57       8.8 +/-    1.57  0.050 / 0.110
G17     241.4          73.3                7.4 +/-    0.42       7.7 +/-    0.42  0.040 / 0.110
G19     226.8          46.3                7.5 +/-    0.93       9.9 +/-    0.93  0.170 / 0.340
G28     25.8           58.2                4.2 +/-    0.55       4.8 +/-    0.55  0.100 / 0.300
G30     137.8          58.5                7.2 +/-    0.65       8.3 +/-    0.65  0.040 / 0.080