PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/09-16:27:40
G02     40.4           49.4                9.5 +/-    0.41      12.1 +/-    0.41  0.030 / 0.040
G05     130.8          67.3               10.9 +/-    0.44      11.7 +/-    0.44  0.030 / 0.050
G06     58.0           11.7                9.0 +/-    2.76      24.3 +/-    2.76  0.030 / 0.050
G12     193.9          59.4               10.5 +/-    0.79      12.0 +/-    0.79  0.040 / 0.060
G20     199.7          34.2               11.8 +/-    1.63      19.0 +/-    1.63  0.040 / 0.060
G25     279.6          58.8               11.9 +/-    1.13      13.6 +/-    1.13  0.050 / 0.050
G29     315.6          38.5                8.8 +/-    1.53      13.1 +/-    1.53  0.070 / 0.130