PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/26-23:27:50
G02     79.3           18.7                7.6 +/-    0.85      17.2 +/-    0.85  0.110 / 0.410
G05     44.5           39.5                7.0 +/-    0.57      10.2 +/-    0.57  0.130 / 0.320
G13     105.2          31.9               10.5 +/-    1.28      17.8 +/-    1.28  0.090 / 0.150
G15     150.5          33.1               11.7 +/-    0.96      19.2 +/-    0.96  0.080 / 0.180
G18     228.7          22.5               11.1 +/-    2.64      23.1 +/-    2.64  0.030 / 0.020
G20     324.4          86.1                7.1 +/-    0.56       7.1 +/-    0.56  0.020 / 0.030
G21     292.8          33.2                7.5 +/-    1.41      12.3 +/-    1.41  0.040 / 0.070
G25     207.0          26.8               10.6 +/-    2.10      19.9 +/-    2.10  0.030 / 0.070
G26     310.4          16.2                6.6 +/-    2.19      16.0 +/-    2.19  0.060 / 0.140
G29     4.1            83.4                8.1 +/-    0.63       8.2 +/-    0.63  0.060 / 0.140