PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/06-20:42:50
G02     34.8           54.4               12.1 +/-    1.33      14.5 +/-    1.33  0.050 / 0.040
G05     139.3          64.8               14.4 +/-    0.30      15.7 +/-    0.30  0.050 / 0.040
G06     56.9           12.0                9.0 +/-    1.19      24.2 +/-    1.19  0.030 / 0.040
G12     193.1          61.4               15.2 +/-    0.82      17.0 +/-    0.82  0.040 / 0.040
G20     198.4          32.5               17.8 +/-    1.30      29.5 +/-    1.30  0.040 / 0.050
G25     281.2          59.8               10.1 +/-    4.03      11.5 +/-    4.03  0.040 / 0.040
G29     311.8          33.5               11.2 +/-    1.88      18.3 +/-    1.88  0.040 / 0.090