PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/28-19:58:10
G02     309.7          80.1               11.5 +/-    0.56      11.7 +/-    0.56  0.080 / 0.130
G05     168.2          29.2               17.3 +/-    0.55      30.8 +/-    0.55  0.080 / 0.110
G06     41.5           41.7                9.6 +/-    0.79      13.6 +/-    0.79  0.080 / 0.150
G12     313.5          70.7               10.3 +/-    1.08      10.8 +/-    1.08  0.080 / 0.200
G17     86.1           10.1                9.5 +/-    2.23      26.3 +/-    2.23  0.110 / 0.330
G19     74.8           26.6                9.9 +/-    2.03      18.7 +/-    2.03  0.100 / 0.300
G24     231.5          24.7               13.1 +/-    1.90      25.9 +/-    1.90  0.030 / 0.040
G25     317.1          31.9               11.6 +/-    1.90      19.5 +/-    1.90  0.030 / 0.040