PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/28-17:12:50
G02     84.4           12.4               12.2 +/-    3.13      32.2 +/-    3.13  0.040 / 0.070
G05     44.7           34.5                9.8 +/-    0.73      15.8 +/-    0.73  0.040 / 0.060
G13     100.3          33.7               12.7 +/-    1.06      20.6 +/-    1.06  0.070 / 0.110
G15     143.5          38.5               14.5 +/-    0.87      21.7 +/-    0.87  0.050 / 0.110
G18     231.6          28.5               14.8 +/-    1.02      26.8 +/-    1.02  0.040 / 0.050
G20     339.7          84.0               11.6 +/-    0.42      11.6 +/-    0.42  0.040 / 0.050
G21     298.7          38.4               13.1 +/-    1.43      19.5 +/-    1.43  0.170 / 0.460
G25     207.5          24.6               15.2 +/-    1.04      29.9 +/-    1.04  0.150 / 0.400
G26     309.2          15.9                8.6 +/-    3.85      20.9 +/-    3.85  0.150 / 0.220
G29     103.5          83.8               13.5 +/-    0.30      13.6 +/-    0.30  0.130 / 0.210