PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-21:12:40
G02     56.2           36.6               10.4 +/-    0.80      16.0 +/-    0.80  0.070 / 0.060
G05     67.9           67.3               11.4 +/-    0.36      12.3 +/-    0.36  0.050 / 0.070
G12     185.2          34.5               12.6 +/-    1.18      20.2 +/-    1.18  0.140 / 0.470
G13     131.7          13.4               13.3 +/-    2.18      34.5 +/-    2.18  0.210 / 0.560
G20     205.5          58.6               12.0 +/-    0.57      13.8 +/-    0.57  0.100 / 0.090
G21     269.0          16.0               12.7 +/-    3.13      30.9 +/-    3.13  0.060 / 0.090
G25     232.4          52.7               11.4 +/-    3.01      14.0 +/-    3.01  0.070 / 0.070
G29     328.3          54.4               10.3 +/-    0.61      12.3 +/-    0.61  0.090 / 0.080