PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/25-02:28:00
G10     288.4          48.0                7.2 +/-    1.28       9.3 +/-    1.28  0.040 / 0.050
G15     48.1           36.1                6.6 +/-    0.66      10.2 +/-    0.66  0.040 / 0.040
G18     340.1          66.7                7.9 +/-    1.20       8.5 +/-    1.20  0.050 / 0.090
G20     67.9           20.4                7.4 +/-    1.43      16.1 +/-    1.43  0.060 / 0.100
G21     73.3           76.8                9.9 +/-    0.42      10.1 +/-    0.42  0.080 / 0.170
G24     105.0          23.9                7.7 +/-    1.77      15.5 +/-    1.77  0.080 / 0.160
G27     304.7          32.5                7.8 +/-    1.28      12.9 +/-    1.28  0.050 / 0.050
G29     167.8          11.3               11.6 +/-    1.59      31.4 +/-    1.59  0.050 / 0.040
G32     208.8          25.8               11.6 +/-    1.67      22.2 +/-    1.67  0.130 / 0.280