PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/08-00:42:50
G02     31.5           56.4                9.7 +/-    1.24      11.4 +/-    1.24  0.020 / 0.030
G05     140.3          60.6               12.3 +/-    0.57      13.9 +/-    0.57  0.020 / 0.020
G06     51.6           19.4                8.0 +/-    2.69      17.9 +/-    2.69  0.070 / 0.060
G12     209.4          72.2               11.8 +/-    0.44      12.3 +/-    0.44  0.040 / 0.050
G19     98.1           10.4               12.6 +/-    2.72      34.8 +/-    2.72  0.030 / 0.030
G25     299.7          52.3               11.1 +/-    1.83      13.7 +/-    1.83  0.030 / 0.030
G29     307.2          29.3               10.0 +/-    1.35      17.7 +/-    1.35  0.110 / 0.180