PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/15-14:57:40
G03     191.9          25.0                9.7 +/-    1.79      18.9 +/-    1.79  0.080 / 0.160
G07     285.0          34.1                8.9 +/-    0.96      14.4 +/-    0.96  0.130 / 0.130
G08     147.4          22.8               11.4 +/-    0.83      23.4 +/-    0.83  0.100 / 0.390
G09     320.7          57.6                8.6 +/-    0.73      10.0 +/-    0.73  0.040 / 0.080
G16     44.2           42.0                9.0 +/-    0.57      12.7 +/-    0.57  0.040 / 0.080
G23     102.6          78.7                9.6 +/-    0.94       9.7 +/-    0.94  0.080 / 0.190
G26     43.0           14.0                6.5 +/-    0.64      16.6 +/-    0.64  0.060 / 0.190
G27     105.1          31.5               12.1 +/-    0.90      20.5 +/-    0.90  0.080 / 0.120
G30     270.2          10.2              -13.9 +/-   24.44     -38.7 +/-   24.44  0.080 / 0.090