PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/17-01:43:10
G01     129.3          9.8               -17.2 +/-   16.55     -48.1 +/-   16.55  0.100 / 0.120
G07     43.5           69.6                5.0 +/-    0.85       5.3 +/-    0.85  0.130 / 0.110
G08     53.5           42.7                4.2 +/-    0.88       5.9 +/-    0.88  0.030 / 0.030
G09     179.3          40.2                8.2 +/-    0.91      11.9 +/-    0.91  0.030 / 0.030
G11     123.2          32.8                6.6 +/-    0.73      10.9 +/-    0.73  0.050 / 0.040
G17     199.8          11.9               -1.3 +/-   16.30      -3.5 +/-   16.30  0.060 / 0.040
G23     160.5          10.2                7.0 +/-    2.17      19.4 +/-    2.17  0.110 / 0.210
G28     272.7          51.9                5.9 +/-    2.79       7.2 +/-    2.79  0.190 / 0.340
G30     334.0          60.6                2.5 +/-    0.48       2.8 +/-    0.48  0.090 / 0.060