PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/13-19:28:10
G01     82.9           33.0               11.8 +/-    2.18      19.4 +/-    2.18  0.170 / 0.260
G07     130.7          40.6               13.6 +/-    0.63      19.7 +/-    0.63  0.120 / 0.210
G11     63.0           37.7               11.3 +/-    1.97      17.1 +/-    1.97  0.030 / 0.030
G13     287.5          37.3               15.0 +/-    1.38      22.9 +/-    1.38  0.030 / 0.030
G15     311.2          12.2               11.7 +/-    2.05      31.1 +/-    2.05  0.030 / 0.060
G17     220.1          56.1               15.0 +/-    1.18      17.7 +/-    1.18  0.030 / 0.070
G18     58.1           22.5               10.4 +/-    1.35      21.4 +/-    1.35  0.090 / 0.210
G19     217.8          31.4               15.1 +/-    3.08      25.8 +/-    3.08  0.140 / 0.210
G28     1.6            61.1               12.2 +/-    0.69      13.7 +/-    0.69  0.040 / 0.060
G30     121.1          70.2               15.3 +/-    0.62      16.2 +/-    0.62  0.050 / 0.050