PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/28-15:12:30
G02     245.9          76.8               15.3 +/-    0.46      15.6 +/-    0.46  0.190 / 0.310
G05     173.9          15.4               22.6 +/-    1.76      55.6 +/-    1.76  0.180 / 0.250
G06     40.2           58.0               15.4 +/-    0.85      17.8 +/-    0.85  0.120 / 0.100
G12     321.4          53.5               14.9 +/-    1.00      18.1 +/-    1.00  0.130 / 0.110
G17     74.2           18.9               12.3 +/-    1.89      27.7 +/-    1.89  0.050 / 0.030
G19     60.9           35.8               13.5 +/-    0.70      21.1 +/-    0.70  0.030 / 0.040
G24     245.1          34.0               17.2 +/-    2.25      27.9 +/-    2.25  0.140 / 0.190
G25     317.2          16.5               12.0 +/-    1.32      28.6 +/-    1.32  0.130 / 0.250