PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/22-01:12:50
G02     256.6          79.7                9.9 +/-    0.56      10.0 +/-    0.56  0.060 / 0.050
G05     169.3          20.1               13.1 +/-    1.02      28.8 +/-    1.02  0.040 / 0.050
G06     40.1           54.9                9.3 +/-    0.71      11.1 +/-    0.71  0.060 / 0.180
G12     321.3          55.2                8.6 +/-    0.94      10.3 +/-    0.94  0.060 / 0.200
G17     71.7           24.1                8.6 +/-    0.77      17.1 +/-    0.77  0.030 / 0.040
G19     59.9           37.3                8.8 +/-    1.29      13.4 +/-    1.29  0.030 / 0.040
G24     241.9          32.8               13.1 +/-    1.04      21.6 +/-    1.04  0.110 / 0.350
G25     317.2          14.4                8.3 +/-    1.27      20.9 +/-    1.27  0.090 / 0.280