PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/28-14:43:10
G02     30.6           58.0                9.4 +/-    0.62      10.8 +/-    0.62  0.040 / 0.040
G05     149.3          57.8               13.2 +/-    0.75      15.3 +/-    0.75  0.030 / 0.050
G06     51.2           21.2                5.5 +/-    0.89      11.8 +/-    0.89  0.100 / 0.220
G12     209.1          72.3               10.2 +/-    0.83      10.7 +/-    0.83  0.100 / 0.210
G19     97.9           10.7                9.6 +/-    0.93      26.3 +/-    0.93  0.040 / 0.040
G20     198.4          22.0               12.9 +/-    1.40      27.0 +/-    1.40  0.030 / 0.040
G25     300.6          52.4               10.0 +/-    0.72      12.3 +/-    0.72  0.040 / 0.060
G29     307.7          30.5                9.3 +/-    1.37      16.1 +/-    1.37  0.050 / 0.060