PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/24-17:27:40
G01     119.5          17.7               13.8 +/-    1.04      32.2 +/-    1.04  0.040 / 0.080
G07     78.8           67.1               13.4 +/-    0.61      14.4 +/-    0.61  0.040 / 0.070
G08     45.7           33.7               11.4 +/-    0.82      18.5 +/-    0.82  0.030 / 0.040
G09     177.0          26.3               13.3 +/-    1.24      25.2 +/-    1.24  0.020 / 0.040
G11     108.3          39.8               14.4 +/-    0.76      21.0 +/-    0.76  0.030 / 0.040
G13     317.9          19.0               13.2 +/-    2.12      29.8 +/-    2.12  0.030 / 0.040
G17     202.5          21.7               13.2 +/-    1.11      28.0 +/-    1.11  0.040 / 0.110
G18     95.0           20.7               12.6 +/-    0.60      27.3 +/-    0.60  0.050 / 0.080
G28     292.3          57.3               13.2 +/-    0.71      15.4 +/-    0.71  0.090 / 0.190
G30     347.4          68.8               13.3 +/-    0.69      14.1 +/-    0.69  0.090 / 0.200