PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/13-14:43:10
G02     55.4           35.8                7.4 +/-    1.29      11.6 +/-    1.29  0.020 / 0.020
G05     72.2           67.3                8.6 +/-    0.33       9.2 +/-    0.33  0.030 / 0.020
G12     187.7          40.4               10.2 +/-    0.89      14.8 +/-    0.89  0.360 / 0.550
G13     134.3          10.8                5.2 +/-   24.47      14.3 +/-   24.47  0.310 / 0.320
G20     205.5          51.7               11.2 +/-    0.91      13.8 +/-    0.91  0.040 / 0.050
G21     267.4          16.7                5.5 +/-    9.41      13.1 +/-    9.41  0.040 / 0.050
G25     245.3          55.6                9.0 +/-    1.28      10.7 +/-    1.28  0.050 / 0.070
G29     328.7          54.1                7.0 +/-    0.50       8.5 +/-    0.50  0.060 / 0.060