PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/28-20:58:00
G02     23.9           62.5               10.1 +/-    1.20      11.3 +/-    1.20  0.040 / 0.060
G05     152.4          56.1               12.1 +/-    1.03      14.3 +/-    1.03  0.040 / 0.060
G06     51.7           19.1                7.9 +/-    1.46      17.8 +/-    1.46  0.050 / 0.120
G12     203.6          71.8               12.0 +/-    0.73      12.5 +/-    0.73  0.050 / 0.130
G19     97.3           10.9                9.1 +/-    2.73      24.9 +/-    2.73  0.020 / 0.040
G20     197.2          22.9               15.4 +/-    0.80      31.7 +/-    0.80  0.020 / 0.040
G25     298.9          54.7               12.0 +/-    1.27      14.4 +/-    1.27  0.050 / 0.050
G29     304.8          25.9               10.2 +/-    1.72      19.6 +/-    1.72  0.060 / 0.060