PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/07-22:57:40
G02     238.7          75.2               12.7 +/-    0.51      13.1 +/-    0.51  0.170 / 0.370
G05     171.5          15.3               17.8 +/-    2.58      43.9 +/-    2.58  0.180 / 0.340
G06     40.6           62.4               11.9 +/-    0.63      13.2 +/-    0.63  0.030 / 0.050
G12     320.7          47.5               10.8 +/-    1.66      14.0 +/-    1.66  0.030 / 0.040
G17     69.4           23.0               11.1 +/-    1.27      22.7 +/-    1.27  0.070 / 0.110
G19     55.5           39.1               12.1 +/-    0.63      17.8 +/-    0.63  0.090 / 0.100
G24     245.9          35.5               14.8 +/-    1.40      23.3 +/-    1.40  0.040 / 0.050
G25     316.0          11.2               -5.7 +/-   38.89     -15.5 +/-   38.89  0.070 / 0.050