PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/28-00:27:30
G02     353.8          76.7                9.1 +/-    0.52       9.3 +/-    0.52  0.110 / 0.190
G05     162.3          36.1               16.7 +/-    0.92      26.0 +/-    0.92  0.090 / 0.170
G06     41.0           41.0                8.2 +/-    0.81      11.8 +/-    0.81  0.030 / 0.050
G12     310.4          70.1                9.3 +/-    0.52       9.8 +/-    0.52  0.040 / 0.080
G19     76.6           25.6               11.4 +/-    1.15      22.0 +/-    1.15  0.080 / 0.110
G24     225.9          21.0               14.9 +/-    1.08      32.0 +/-    1.08  0.080 / 0.120
G25     316.6          31.1                9.4 +/-    1.29      16.1 +/-    1.29  0.030 / 0.040
G29     288.7          13.2               11.7 +/-    2.34      30.4 +/-    2.34  0.040 / 0.040