PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/25-22:28:10
G02     56.4           36.8               10.4 +/-    1.09      16.0 +/-    1.09  0.050 / 0.050
G05     64.2           65.5               12.1 +/-    0.36      13.1 +/-    0.36  0.040 / 0.050
G12     184.5          32.9               15.0 +/-    0.91      24.7 +/-    0.91  0.060 / 0.080
G13     130.8          14.1               14.7 +/-    2.20      37.4 +/-    2.20  0.060 / 0.110
G20     205.8          60.1               15.3 +/-    0.75      17.4 +/-    0.75  0.050 / 0.060
G21     269.7          16.3               14.2 +/-    2.07      34.2 +/-    2.07  0.050 / 0.080
G25     230.9          51.9               13.8 +/-    3.03      17.0 +/-    3.03  0.290 / 0.390
G29     328.4          54.8               11.8 +/-    0.94      14.1 +/-    0.94  0.160 / 0.500