PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/02-16:57:30
G02     40.7           49.2               15.1 +/-    0.56      19.3 +/-    0.56  0.050 / 0.050
G05     130.4          67.7               16.4 +/-    0.64      17.6 +/-    0.64  0.040 / 0.050
G06     58.4           11.0               14.3 +/-    3.44      38.9 +/-    3.44  0.040 / 0.050
G12     193.3          58.6               15.5 +/-    1.33      17.9 +/-    1.33  0.040 / 0.050
G20     199.7          35.1               17.4 +/-    1.41      27.6 +/-    1.41  0.150 / 0.270
G25     277.8          59.1               14.6 +/-    1.17      16.7 +/-    1.17  0.120 / 0.310
G29     315.8          38.6               13.9 +/-    1.29      20.7 +/-    1.29  0.070 / 0.120