PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/16-21:27:50
G10     250.5          25.7               16.9 +/-    2.00      32.4 +/-    2.00  0.050 / 0.050
G13     54.9           31.5               14.3 +/-    1.05      24.3 +/-    1.05  0.040 / 0.050
G15     87.3           57.5               15.8 +/-    0.60      18.3 +/-    0.60  0.100 / 0.310
G16     299.2          14.0               10.9 +/-    1.87      27.8 +/-    1.87  0.110 / 0.350
G18     269.0          56.0               16.4 +/-    0.91      19.3 +/-    0.91  0.090 / 0.290
G20     42.9           48.3               14.0 +/-    0.55      18.0 +/-    0.55  0.100 / 0.290
G21     335.1          61.1               15.2 +/-    0.83      17.1 +/-    0.83  0.060 / 0.070
G26     271.5          15.3               14.8 +/-    1.63      36.5 +/-    1.63  0.060 / 0.060
G29     163.0          45.9               17.8 +/-    0.83      23.7 +/-    0.83  0.070 / 0.120