PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/31-15:57:40
G01     222.8          13.4               11.9 +/-    5.36      30.7 +/-    5.36  0.090 / 0.250
G03     261.0          71.7               10.4 +/-    0.52      10.9 +/-    0.52  0.100 / 0.280
G14     90.1           23.5                9.0 +/-    0.79      18.1 +/-    0.79  0.030 / 0.050
G16     140.6          50.6               13.6 +/-    1.12      17.0 +/-    1.12  0.040 / 0.050
G22     198.1          63.9               10.1 +/-    1.20      11.1 +/-    1.20  0.070 / 0.080
G23     313.5          44.0                7.8 +/-    1.26      10.7 +/-    1.26  0.050 / 0.100
G26     85.0           53.8               10.4 +/-    0.41      12.5 +/-    0.41  0.070 / 0.120
G31     47.8           26.3                8.4 +/-    0.76      16.0 +/-    0.76  0.080 / 0.130