PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/24-16:57:50
G02     73.4           21.2               15.6 +/-    1.48      33.4 +/-    1.48  0.070 / 0.130
G05     46.1           48.0               15.0 +/-    1.00      19.4 +/-    1.00  0.140 / 0.140
G12     182.3          16.5               16.4 +/-    4.69      39.3 +/-    4.69  0.090 / 0.160
G13     115.4          26.3               17.5 +/-    0.85      33.2 +/-    0.85  0.090 / 0.170
G15     153.7          26.2               19.3 +/-    0.92      36.7 +/-    0.92  0.040 / 0.040
G18     223.8          16.3               16.7 +/-    2.27      40.3 +/-    2.27  0.030 / 0.040
G20     226.4          77.7               17.6 +/-    0.98      18.0 +/-    0.98  0.030 / 0.040
G21     286.2          29.8               20.8 +/-    1.12      36.5 +/-    1.12  0.040 / 0.040
G25     216.4          37.2               19.5 +/-    2.43      29.7 +/-    2.43  0.050 / 0.100
G29     354.6          76.9               16.2 +/-    0.41      16.6 +/-    0.41  0.050 / 0.100