PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/22-10:27:50
G01     50.4           25.5                5.3 +/-    1.02      10.2 +/-    1.02  0.030 / 0.070
G06     179.5          23.0                7.7 +/-    1.80      15.7 +/-    1.80  0.040 / 0.060
G07     146.0          11.4                5.3 +/-    3.23      14.3 +/-    3.23  0.030 / 0.030
G11     44.5           14.2                2.9 +/-    1.99       7.3 +/-    1.99  0.020 / 0.030
G13     252.9          30.5                7.1 +/-    1.66      12.2 +/-    1.66  0.100 / 0.200
G15     284.4          15.9                4.6 +/-    2.66      11.1 +/-    2.66  0.130 / 0.210
G17     324.3          78.7                7.7 +/-    0.55       7.8 +/-    0.55  0.050 / 0.110
G19     247.7          61.5                7.9 +/-    0.62       8.8 +/-    0.62  0.050 / 0.090
G28     52.8           52.6                5.0 +/-    0.43       6.2 +/-    0.43  0.130 / 0.410
G30     149.3          42.1               10.5 +/-    1.03      14.8 +/-    1.03  0.130 / 0.390