PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/12-16:58:00
G02     55.9           35.8               11.1 +/-    0.62      17.4 +/-    0.62  0.070 / 0.090
G05     71.6           67.8               12.4 +/-    0.38      13.3 +/-    0.38  0.080 / 0.110
G12     186.9          38.5               15.3 +/-    1.59      22.8 +/-    1.59  0.030 / 0.040
G13     133.5          11.7               22.3 +/-    3.31      60.0 +/-    3.31  0.040 / 0.040
G20     205.5          54.3               17.2 +/-    0.69      20.7 +/-    0.69  0.030 / 0.080
G21     267.9          16.2               14.9 +/-    3.00      36.1 +/-    3.00  0.040 / 0.060
G25     240.9          54.7               15.2 +/-    1.31      18.1 +/-    1.31  0.100 / 0.100
G29     329.2          54.8              -26.2 +/-    6.65     -31.3 +/-    6.65  0.080 / 0.080