PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-18:27:50
G01     108.2          25.0               10.9 +/-    1.44      21.2 +/-    1.44  0.060 / 0.170
G07     104.8          59.5               12.3 +/-    0.52      14.1 +/-    0.52  0.070 / 0.160
G08     42.4           23.4                7.8 +/-    1.21      15.9 +/-    1.21  0.030 / 0.030
G09     175.2          14.7               14.3 +/-    1.80      35.7 +/-    1.80  0.020 / 0.030
G11     91.7           43.0               12.0 +/-    0.25      16.6 +/-    0.25  0.040 / 0.090
G13     310.6          27.8               10.3 +/-    1.81      18.8 +/-    1.81  0.040 / 0.080
G17     206.3          33.7               12.6 +/-    1.70      20.5 +/-    1.70  0.130 / 0.350
G18     82.0           24.2               10.5 +/-    0.90      21.0 +/-    0.90  0.120 / 0.350
G28     316.2          60.8               11.7 +/-    0.78      13.1 +/-    0.78  0.040 / 0.060
G30     23.3           77.7               11.8 +/-    0.73      12.0 +/-    0.73  0.050 / 0.070