PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-22:58:10
G02     209.2          51.3               14.9 +/-    1.10      18.5 +/-    1.10  0.090 / 0.120
G06     97.9           79.3               12.1 +/-    0.51      12.3 +/-    0.51  0.120 / 0.120
G12     315.2          28.0                9.1 +/-    1.50      16.7 +/-    1.50  0.070 / 0.060
G17     46.9           41.5                9.3 +/-    0.93      13.2 +/-    0.93  0.080 / 0.080
G19     25.5           56.3               11.0 +/-    0.98      12.9 +/-    0.98  0.090 / 0.240
G24     278.4          42.4               11.2 +/-    0.83      15.7 +/-    0.83  0.120 / 0.220
G28     116.0          20.4               11.0 +/-    2.09      24.0 +/-    2.09  0.030 / 0.060