PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-21:28:00
G10     248.9          24.4               17.5 +/-    2.22      34.6 +/-    2.22  0.110 / 0.430
G13     56.7           32.5               13.5 +/-    0.84      22.4 +/-    0.84  0.110 / 0.380
G15     91.2           57.8               13.6 +/-    0.57      15.7 +/-    0.57  0.100 / 0.310
G16     300.9          14.0               12.0 +/-    1.63      30.6 +/-    1.63  0.120 / 0.310
G18     266.3          54.8               15.3 +/-    0.86      18.3 +/-    0.86  0.040 / 0.050
G20     41.6           49.9               13.5 +/-    1.05      17.1 +/-    1.05  0.050 / 0.050
G21     332.7          59.8               16.3 +/-    0.99      18.5 +/-    0.99  0.030 / 0.050
G26     273.3          15.9               16.2 +/-    2.71      39.3 +/-    2.71  0.030 / 0.060
G29     162.4          48.0               18.2 +/-    1.46      23.6 +/-    1.46  0.050 / 0.140