PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/25-17:27:50
G02     85.3           11.8               14.0 +/-    2.90      37.5 +/-    2.90  0.050 / 0.130
G05     44.8           33.5               11.5 +/-    1.06      18.8 +/-    1.06  0.070 / 0.110
G13     98.9           34.3               15.3 +/-    1.40      24.7 +/-    1.40  0.040 / 0.080
G15     142.6          39.5               17.5 +/-    0.63      25.6 +/-    0.63  0.050 / 0.080
G18     232.4          29.5               16.4 +/-    2.20      29.1 +/-    2.20  0.040 / 0.040
G20     349.4          83.0               13.7 +/-    0.56      13.7 +/-    0.56  0.040 / 0.040
G21     299.7          39.0               14.4 +/-    1.72      21.4 +/-    1.72  0.120 / 0.400
G25     206.8          23.5               16.8 +/-    2.67      34.0 +/-    2.67  0.120 / 0.330
G26     308.2          16.2               12.1 +/-    3.78      29.3 +/-    3.78  0.040 / 0.110
G29     112.5          83.1               13.5 +/-    0.68      13.6 +/-    0.68  0.040 / 0.120