PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-00:13:00
G02     22.9           63.7                9.2 +/-    0.50      10.2 +/-    0.50  0.030 / 0.020
G05     150.9          52.9               13.7 +/-    0.87      16.7 +/-    0.87  0.020 / 0.020
G06     48.7           23.4                7.6 +/-    1.74      15.4 +/-    1.74  0.030 / 0.040
G12     222.6          77.7               10.9 +/-    0.41      11.1 +/-    0.41  0.040 / 0.040
G19     90.7           17.6               10.8 +/-    1.90      25.3 +/-    1.90  0.080 / 0.180
G25     309.4          44.9                9.8 +/-    0.93      13.3 +/-    0.93  0.130 / 0.110
G29     299.3          19.6               10.0 +/-    1.60      22.3 +/-    1.60  0.070 / 0.070