PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/29-18:43:00
G02     281.1          80.2               11.6 +/-    1.04      11.7 +/-    1.04  0.060 / 0.170
G05     168.0          25.2               15.4 +/-    2.03      30.0 +/-    2.03  0.070 / 0.170
G06     40.5           46.3               11.1 +/-    0.50      14.6 +/-    0.50  0.020 / 0.050
G12     319.9          66.6                8.6 +/-    0.64       9.2 +/-    0.64  0.030 / 0.050
G17     79.5           15.9               11.9 +/-    1.28      29.0 +/-    1.28  0.030 / 0.040
G19     65.0           35.0               11.5 +/-    0.67      18.2 +/-    0.67  0.050 / 0.040
G24     233.8          28.2               12.9 +/-    2.47      23.4 +/-    2.47  0.110 / 0.240
G25     317.7          21.7                7.6 +/-    2.46      16.1 +/-    2.46  0.080 / 0.180