PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/06-21:58:10
G02     207.1          46.5               18.5 +/-    0.96      24.4 +/-    0.96  0.090 / 0.160
G06     138.6          78.0               16.1 +/-    0.55      16.4 +/-    0.55  0.070 / 0.170
G12     311.9          21.5               11.8 +/-    1.55      25.1 +/-    1.55  0.060 / 0.080
G17     45.6           41.1               12.6 +/-    1.16      18.0 +/-    1.16  0.050 / 0.060
G19     21.5           58.0               14.9 +/-    0.92      17.2 +/-    0.92  0.130 / 0.240
G24     283.3          42.1               16.9 +/-    2.64      23.7 +/-    2.64  0.090 / 0.210
G28     110.3          27.8               17.2 +/-    0.66      31.5 +/-    0.66  0.040 / 0.030