PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/11-09:57:30
G02     199.5          17.6                5.5 +/-    0.97      12.9 +/-    0.97  0.040 / 0.080
G06     175.9          46.7                8.3 +/-    1.32      11.0 +/-    1.32  0.040 / 0.100
G13     231.6          15.9                3.8 +/-    2.25       9.2 +/-    2.25  0.080 / 0.170
G17     19.8           61.7                4.2 +/-    0.47       4.7 +/-    0.47  0.080 / 0.150
G19     314.7          71.9                3.5 +/-    0.48       3.6 +/-    0.48  0.030 / 0.040
G24     313.4          25.4                5.1 +/-    2.83      10.0 +/-    2.83  0.020 / 0.040
G28     84.0           41.4                4.6 +/-    0.82       6.5 +/-    0.82  0.040 / 0.050
G30     156.4          18.2                6.5 +/-    1.92      14.9 +/-    1.92  0.050 / 0.050