PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/12-16:12:50
G01     223.5          14.8                8.0 +/-    8.30      20.0 +/-    8.30  0.230 / 0.390
G03     270.1          71.6                9.1 +/-    0.50       9.5 +/-    0.50  0.310 / 0.450
G14     89.6           21.3                7.3 +/-    1.40      15.5 +/-    1.40  0.100 / 0.300
G16     150.6          45.1               10.1 +/-    1.69      13.6 +/-    1.69  0.120 / 0.250
G22     202.1          65.9                8.1 +/-    0.67       8.8 +/-    0.67  0.030 / 0.040
G23     309.2          38.8                8.0 +/-    1.28      11.8 +/-    1.28  0.040 / 0.040
G26     98.9           56.0                8.5 +/-    1.38      10.0 +/-    1.38  0.040 / 0.050
G31     46.0           31.5                7.1 +/-    1.32      12.1 +/-    1.32  0.040 / 0.060