PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/29-16:28:00
G02     22.2           64.3               16.7 +/-    0.68      18.3 +/-    0.68  0.050 / 0.080
G05     157.9          50.3               17.2 +/-    0.68      21.6 +/-    0.68  0.060 / 0.070
G06     48.4           25.2               12.5 +/-    2.10      24.4 +/-    2.10  0.040 / 0.030
G12     228.1          77.5               13.1 +/-    0.39      13.4 +/-    0.39  0.030 / 0.030
G19     92.7           14.4               13.0 +/-    2.44      32.7 +/-    2.44  0.110 / 0.190
G20     197.7          16.5               17.1 +/-    2.88      41.0 +/-    2.88  0.170 / 0.360
G25     307.2          48.4               12.6 +/-    1.95      16.2 +/-    1.95  0.050 / 0.040
G29     302.1          24.5               11.8 +/-    1.35      23.3 +/-    1.35  0.050 / 0.040