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                9.2 +/-    0.80       9.3 +/-    0.80  0.030 / 0.040
G05     168.5          23.3               10.3 +/-    0.92      21.0 +/-    0.92  0.030 / 0.040
G06     40.2           49.1                9.2 +/-    0.77      11.8 +/-    0.77  0.070 / 0.130
G12     320.9          62.7                8.2 +/-    0.77       9.1 +/-    0.77  0.080 / 0.120
G17     77.0           18.5                9.1 +/-    1.01      20.8 +/-    1.01  0.110 / 0.160
G19     63.0           36.0                8.1 +/-    0.82      12.6 +/-    0.82  0.080 / 0.180
G24     236.5          29.9               11.7 +/-    1.80      20.4 +/-    1.80  0.110 / 0.150
G25     317.6          19.0                8.3 +/-    2.26      18.6 +/-    2.26  0.090 / 0.150