PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/01-01:57:50
G02     27.2           60.6                7.3 +/-    0.70       8.2 +/-    0.70  0.020 / 0.030
G05     147.2          55.9               11.5 +/-    0.68      13.6 +/-    0.68  0.020 / 0.030
G06     50.0           21.5                6.5 +/-    2.06      13.8 +/-    2.06  0.030 / 0.040
G12     215.1          75.6                9.8 +/-    1.13      10.1 +/-    1.13  0.030 / 0.040
G19     93.5           15.4               10.0 +/-    1.24      24.7 +/-    1.24  0.170 / 0.150
G25     306.9          47.1                8.0 +/-    1.16      10.5 +/-    1.16  0.250 / 0.160
G29     301.7          22.0                8.4 +/-    1.52      17.7 +/-    1.52  0.050 / 0.080