PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/02-20:42:50
G10     258.7          32.1               19.3 +/-    1.99      32.3 +/-    1.99  0.140 / 0.420
G13     47.3           25.7               17.1 +/-    0.89      33.0 +/-    0.89  0.140 / 0.420
G15     69.8           53.9               17.4 +/-    0.23      21.0 +/-    0.23  0.160 / 0.540
G16     290.9          13.0               15.2 +/-    2.24      39.7 +/-    2.24  0.130 / 0.400
G18     285.0          61.3               16.7 +/-    0.74      18.7 +/-    0.74  0.040 / 0.050
G20     48.9           41.1               15.9 +/-    0.86      22.7 +/-    0.86  0.040 / 0.040
G21     350.4          67.7               17.3 +/-    1.20      18.5 +/-    1.20  0.090 / 0.230
G26     263.8          11.6               17.3 +/-    1.82      46.5 +/-    1.82  0.080 / 0.220
G27     320.9          13.8               13.6 +/-    3.21      34.7 +/-    3.21  0.040 / 0.070
G29     164.8          35.1               19.5 +/-    1.73      30.9 +/-    1.73  0.050 / 0.080