PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/07-23:28:00
G02     310.9          81.4                8.6 +/-    0.67       8.7 +/-    0.67  0.020 / 0.040
G05     166.1          27.7               14.5 +/-    1.32      26.7 +/-    1.32  0.030 / 0.040
G06     39.3           48.7               10.5 +/-    0.63      13.5 +/-    0.63  0.110 / 0.140
G12     318.5          61.4               10.4 +/-    0.99      11.7 +/-    0.99  0.170 / 0.140
G17     80.4           15.0               10.9 +/-    2.53      27.2 +/-    2.53  0.160 / 0.140
G19     68.7           30.7               10.1 +/-    0.92      17.5 +/-    0.92  0.150 / 0.170
G24     232.9          27.0               13.8 +/-    1.15      25.9 +/-    1.15  0.080 / 0.110
G25     317.5          23.1                8.1 +/-    2.43      16.6 +/-    2.43  0.050 / 0.120