PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/25-18:13:10
G07     312.0          50.6               11.7 +/-    0.55      14.7 +/-    0.55  0.040 / 0.060
G08     126.0          40.8               14.8 +/-    1.04      21.3 +/-    1.04  0.030 / 0.050
G09     305.2          77.7               12.2 +/-    0.52      12.5 +/-    0.52  0.040 / 0.020
G16     42.0           28.9                9.6 +/-    1.39      17.1 +/-    1.39  0.040 / 0.030
G23     144.3          64.8               13.5 +/-    0.57      14.7 +/-    0.57  0.060 / 0.070
G27     82.0           37.8               12.0 +/-    0.86      18.0 +/-    0.86  0.060 / 0.060
G30     286.1          22.7               11.6 +/-    1.58      23.9 +/-    1.58  0.090 / 0.160