PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/01-00:27:40
G02     7.0            72.4                8.7 +/-    0.33       9.1 +/-    0.33  0.120 / 0.320
G05     159.3          41.6               14.1 +/-    1.40      20.0 +/-    1.40  0.090 / 0.260
G06     42.8           35.9                7.8 +/-    1.09      12.2 +/-    1.09  0.070 / 0.110
G12     297.9          75.1                9.3 +/-    1.15       9.6 +/-    1.15  0.070 / 0.080
G19     81.6           22.2                9.2 +/-    1.28      19.2 +/-    1.28  0.050 / 0.040
G24     222.0          17.2               12.8 +/-    2.86      30.3 +/-    2.86  0.040 / 0.040
G25     315.0          36.1                9.5 +/-    1.11      14.8 +/-    1.11  0.030 / 0.030
G29     292.8          16.5                9.6 +/-    1.94      23.0 +/-    1.94  0.030 / 0.030