PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/02-20:27:50
G02     271.4          80.0                9.6 +/-    0.61       9.7 +/-    0.61  0.040 / 0.130
G05     168.5          23.3               12.2 +/-    1.93      24.7 +/-    1.93  0.060 / 0.180
G06     40.2           49.1                8.7 +/-    0.58      11.1 +/-    0.58  0.100 / 0.230
G12     320.9          62.7                8.0 +/-    1.18       8.9 +/-    1.18  0.110 / 0.240
G17     77.0           18.5                9.4 +/-    1.23      21.5 +/-    1.23  0.030 / 0.060
G19     63.0           36.0                9.7 +/-    0.57      15.1 +/-    0.57  0.020 / 0.050
G24     236.5          29.9               11.8 +/-    1.24      20.6 +/-    1.24  0.060 / 0.120
G25     317.6          19.0                8.7 +/-    1.59      19.6 +/-    1.59  0.080 / 0.140