PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/13-22:12:40
G01     123.0          15.0               13.0 +/-    3.29      32.2 +/-    3.29  0.080 / 0.080
G07     66.9           68.6               11.2 +/-    0.36      11.9 +/-    0.36  0.140 / 0.070
G08     48.6           38.6               10.3 +/-    0.86      15.3 +/-    0.86  0.130 / 0.240
G09     178.4          31.7               13.9 +/-    0.79      23.4 +/-    0.79  0.170 / 0.220
G11     116.1          37.6               13.4 +/-    0.78      20.3 +/-    0.78  0.030 / 0.050
G13     319.9          15.2                9.2 +/-    2.15      22.7 +/-    2.15  0.050 / 0.050
G17     201.6          17.5               13.8 +/-    2.26      32.2 +/-    2.26  0.090 / 0.240
G28     285.5          55.8               11.5 +/-    2.89      13.6 +/-    2.89  0.210 / 0.320
G30     345.9          67.1               10.4 +/-    0.40      11.2 +/-    0.40  0.140 / 0.380