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               11.9 +/-    0.27      12.3 +/-    0.27  0.060 / 0.050
G05     171.5          15.3               18.0 +/-    0.94      44.4 +/-    0.94  0.060 / 0.050
G06     40.6           62.4               10.8 +/-    0.54      12.0 +/-    0.54  0.080 / 0.090
G12     320.7          47.5               11.4 +/-    0.72      14.9 +/-    0.72  0.080 / 0.090
G17     69.4           23.0               12.0 +/-    1.38      24.6 +/-    1.38  0.130 / 0.210
G19     55.5           39.1               12.1 +/-    1.45      17.9 +/-    1.45  0.150 / 0.260
G24     245.9          35.5               14.4 +/-    2.28      22.7 +/-    2.28  0.050 / 0.030