PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/31-21:57:40
G10     238.6          14.1               21.3 +/-    2.43      54.1 +/-    2.43  0.040 / 0.070
G13     73.0           37.2               15.8 +/-    0.43      24.1 +/-    0.43  0.040 / 0.070
G15     120.1          54.1               19.7 +/-    1.16      23.7 +/-    1.16  0.190 / 0.370
G16     313.4          12.0               11.7 +/-    1.80      31.4 +/-    1.80  0.130 / 0.230
G18     248.9          44.5               19.9 +/-    0.78      27.1 +/-    0.78  0.050 / 0.090
G20     31.8           62.3               15.7 +/-    0.46      17.4 +/-    0.46  0.060 / 0.090
G21     316.8          50.0               14.9 +/-    0.70      18.8 +/-    0.70  0.030 / 0.040
G26     286.7          19.3               14.0 +/-    1.84      31.4 +/-    1.84  0.030 / 0.040
G29     156.6          64.6               17.4 +/-    1.00      19.0 +/-    1.00  0.030 / 0.050