PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/24-17:58:00
G05     47.0           23.2               19.3 +/-    1.13      39.2 +/-    1.13  0.110 / 0.190
G13     84.0           37.2               21.9 +/-    0.66      33.3 +/-    0.66  0.120 / 0.190
G15     130.1          48.9               23.8 +/-    1.38      30.4 +/-    1.38  0.040 / 0.080
G18     241.3          39.1               23.5 +/-    1.61      34.6 +/-    1.61  0.040 / 0.080
G20     20.9           72.0               22.1 +/-    0.79      23.1 +/-    0.79  0.080 / 0.130
G21     310.4          46.1               27.9 +/-    0.81      37.1 +/-    0.81  0.080 / 0.110
G25     200.7          13.7               24.0 +/-    2.16      61.6 +/-    2.16  0.040 / 0.050
G26     297.3          18.6               21.0 +/-    2.30      47.9 +/-    2.30  0.040 / 0.040
G29     147.2          71.4               23.4 +/-    0.79      24.5 +/-    0.79  0.150 / 0.350