PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/18-23:12:40
G02     61.8197        32.6038          9.2096 +/-  0.5004   15.3000 +/-  0.5004  0.050 / 0.070
G05     53.7738        59.3823          9.4065 +/-  0.5523   10.7412 +/-  0.5523  0.050 / 0.080
G12     183.0083       25.5781         14.1109 +/-  2.0975   27.2104 +/-  2.0975  0.120 / 0.380
G13     125.3862       18.7927         13.4003 +/-  1.5716   30.3698 +/-  1.5716  0.100 / 0.300
G15     163.2267       14.6074         17.1100 +/-  1.5198   42.9648 +/-  1.5198  0.030 / 0.050
G20     209.7566       67.7888         13.1834 +/-  1.1085   14.1211 +/-  1.1085  0.030 / 0.040
G21     275.0428       20.3177          9.9591 +/-  1.6981   21.7442 +/-  1.6981  0.040 / 0.090
G25     223.2809       46.3523         13.4199 +/-  2.3304   17.7452 +/-  2.3304  0.050 / 0.100
G29     332.8533       61.1714         11.1886 +/-  0.8993   12.5796 +/-  0.8993  0.070 / 0.130