PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/27-17:13:00
G01     243.0          30.7               11.6 +/-    1.57      20.0 +/-    1.57  0.030 / 0.030
G03     312.5          55.0                9.3 +/-    1.52      11.1 +/-    1.52  0.030 / 0.030
G14     67.0           37.7                8.8 +/-    0.91      13.3 +/-    0.91  0.050 / 0.090
G16     159.6          25.4               16.4 +/-    1.74      31.6 +/-    1.74  0.050 / 0.100
G22     285.6          74.1               10.9 +/-    0.53      11.3 +/-    0.53  0.100 / 0.140
G23     293.3          25.7                8.6 +/-    0.93      16.5 +/-    0.93  0.090 / 0.170
G26     127.2          44.4               13.4 +/-    0.67      18.2 +/-    0.67  0.060 / 0.040
G31     40.6           49.7                8.4 +/-    0.74      10.7 +/-    0.74  0.040 / 0.040
G32     84.2           17.4                9.2 +/-    1.00      21.5 +/-    1.00  0.070 / 0.060