PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/19-17:58:10
G03     189.2          21.2               11.1 +/-    1.26      23.6 +/-    1.26  0.060 / 0.090
G07     291.2          40.5               10.1 +/-    1.60      14.5 +/-    1.60  0.090 / 0.070
G08     141.6          26.5               11.1 +/-    1.71      20.9 +/-    1.71  0.180 / 0.290
G09     320.6          59.6               10.2 +/-    0.84      11.6 +/-    0.84  0.150 / 0.230
G16     45.0           46.3                8.2 +/-    0.73      10.8 +/-    0.73  0.040 / 0.030
G23     98.4           82.2                8.9 +/-    0.46       9.0 +/-    0.46  0.030 / 0.030
G26     43.7           17.0                7.0 +/-    2.54      16.6 +/-    2.54  0.110 / 0.300
G27     105.0          32.5               10.2 +/-    1.06      16.9 +/-    1.06  0.200 / 0.260
G30     272.2          11.7                0.9 +/-   31.09       2.5 +/-   31.09  0.060 / 0.090