PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/11-15:57:30
G02     31.8           56.9               11.1 +/-    0.40      12.9 +/-    0.40  0.050 / 0.040
G05     148.4          59.2               13.3 +/-    1.03      15.2 +/-    1.03  0.040 / 0.040
G06     52.5           18.9                9.9 +/-    0.74      22.4 +/-    0.74  0.050 / 0.040
G12     204.4          70.1               11.1 +/-    0.81      11.7 +/-    0.81  0.050 / 0.040
G20     198.3          24.4               11.6 +/-    1.83      22.9 +/-    1.83  0.090 / 0.290
G25     297.3          54.2               12.7 +/-    0.94      15.3 +/-    0.94  0.110 / 0.260
G29     308.6          31.1                8.6 +/-    0.99      14.8 +/-    0.99  0.040 / 0.060