PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/28-20:27:40
G02     2.3            73.0               11.0 +/-    0.56      11.5 +/-    0.56  0.060 / 0.080
G05     162.4          42.3               14.8 +/-    1.12      20.8 +/-    1.12  0.070 / 0.080
G06     45.6           30.0                8.4 +/-    0.82      14.7 +/-    0.82  0.130 / 0.220
G12     264.3          80.2                9.9 +/-    0.64      10.1 +/-    0.64  0.150 / 0.220
G19     86.2           18.9               10.0 +/-    1.31      22.5 +/-    1.31  0.090 / 0.310
G24     221.7          15.6               13.7 +/-    0.98      33.5 +/-    0.98  0.170 / 0.230
G25     312.3          43.8               11.6 +/-    2.28      15.9 +/-    2.28  0.030 / 0.030
G29     295.1          16.8                8.5 +/-    2.92      20.3 +/-    2.92  0.030 / 0.030