PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-17:43:00
G01     248.1          33.7               11.2 +/-    1.72      18.2 +/-    1.72  0.030 / 0.030
G03     315.0          49.7                9.5 +/-    1.35      12.1 +/-    1.35  0.040 / 0.030
G11     237.6          11.3               11.9 +/-    3.52      32.4 +/-    3.52  0.040 / 0.030
G14     62.2           40.3                8.7 +/-    1.00      12.6 +/-    1.00  0.030 / 0.040
G16     162.2          20.6                0.4 +/-   20.38       1.0 +/-   20.38  0.110 / 0.310
G22     298.9          70.1               10.8 +/-    0.54      11.4 +/-    0.54  0.130 / 0.230
G23     289.4          22.3               10.4 +/-    1.74      21.6 +/-    1.74  0.050 / 0.100
G26     132.9          40.5               11.1 +/-    0.74      16.0 +/-    0.74  0.050 / 0.080
G31     40.5           54.9                8.9 +/-    0.52      10.6 +/-    0.52  0.100 / 0.120
G32     80.1           20.5                9.4 +/-    1.14      20.3 +/-    1.14  0.100 / 0.140