PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/20-20:12:50
G01     108.8          24.7               13.4 +/-    0.80      26.4 +/-    0.80  0.100 / 0.170
G07     103.7          60.0               13.6 +/-    0.54      15.5 +/-    0.54  0.090 / 0.150
G08     42.7           25.3               10.6 +/-    1.01      20.6 +/-    1.01  0.060 / 0.180
G09     175.6          15.7               18.4 +/-    2.07      44.9 +/-    2.07  0.090 / 0.190
G11     93.6           43.1               14.3 +/-    0.35      19.8 +/-    0.35  0.030 / 0.040
G13     311.1          27.2               11.6 +/-    1.78      21.5 +/-    1.78  0.030 / 0.050
G17     206.5          31.7               16.1 +/-    1.75      27.2 +/-    1.75  0.040 / 0.070
G18     82.8           24.1               11.8 +/-    0.65      23.5 +/-    0.65  0.040 / 0.080
G28     315.3          60.8               13.4 +/-    0.73      15.1 +/-    0.73  0.040 / 0.060
G30     25.0           77.5               13.9 +/-    0.78      14.2 +/-    0.78  0.040 / 0.050