PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-23:28:10
G01     123.6          14.5               13.1 +/-    2.63      32.9 +/-    2.63  0.050 / 0.160
G07     64.9           68.8               10.4 +/-    0.74      11.0 +/-    0.74  0.060 / 0.190
G08     48.7           38.4                8.6 +/-    0.40      12.9 +/-    0.40  0.040 / 0.050
G09     178.5          32.5               12.6 +/-    1.66      20.9 +/-    1.66  0.060 / 0.060
G11     117.1          37.1               12.9 +/-    1.12      19.7 +/-    1.12  0.160 / 0.330
G13     320.2          14.4                7.4 +/-    2.15      18.8 +/-    2.15  0.190 / 0.300
G17     201.2          17.6               12.7 +/-    1.68      29.7 +/-    1.68  0.040 / 0.070
G28     284.3          55.5               10.5 +/-    0.85      12.4 +/-    0.85  0.030 / 0.060
G30     346.4          67.1                9.3 +/-    0.51      10.0 +/-    0.51  0.090 / 0.390