PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/15-20:12:30
G07     316.8          51.0               19.6 +/-    1.00      24.4 +/-    1.00  0.050 / 0.080
G08     122.4          46.4               24.3 +/-    0.63      32.0 +/-    0.63  0.050 / 0.060
G09     252.1          82.6               22.3 +/-    1.10      22.4 +/-    1.10  0.040 / 0.050
G16     43.6           16.4               15.1 +/-    3.12      36.3 +/-    3.12  0.040 / 0.040
G23     149.6          51.4               22.7 +/-    0.39      28.2 +/-    0.39  0.040 / 0.020
G27     67.0           35.8               18.6 +/-    1.07      29.1 +/-    1.07  0.030 / 0.020
G28     229.3          20.6               26.6 +/-    3.14      57.7 +/-    3.14  0.170 / 0.400
G30     294.3          30.2               22.0 +/-    1.76      38.4 +/-    1.76  0.360 / 0.280