PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/07-14:12:20
G02     35.0           54.2                7.7 +/-    0.95       9.2 +/-    0.95  0.020 / 0.030
G05     142.1          62.0               13.3 +/-    0.39      14.8 +/-    0.39  0.020 / 0.040
G06     53.4           18.2                6.4 +/-    3.86      14.7 +/-    3.86  0.260 / 0.240
G12     201.7          67.8                9.6 +/-    0.23      10.3 +/-    0.23  0.250 / 0.200
G20     199.0          26.0               11.3 +/-    3.02      21.5 +/-    3.02  0.040 / 0.040
G25     294.6          54.9                8.3 +/-    3.41       9.9 +/-    3.41  0.030 / 0.030
G29     310.9          33.8                4.7 +/-    0.83       7.7 +/-    0.83  0.180 / 0.310