PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/19-20:42:30
G02     324.6813       79.2353        -73.3901 +/- 47.3157  -74.5681 +/- 47.3157  0.080 / 0.100
G05     166.4834       32.7354         13.4242 +/-  1.1613   22.2443 +/-  1.1613  0.070 / 0.140
G06     42.3842        38.5155        -19.9162 +/- 24.3152  -29.6929 +/- 24.3152  0.050 / 0.110
G12     307.3258       74.2750         42.9374 +/- 19.7578   44.4286 +/- 19.7578  0.050 / 0.100
G19     77.7167        24.6813         26.7141 +/- 16.4011   52.5814 +/- 16.4011  0.090 / 0.320
G24     228.8984       22.4363         -3.7643 +/- 20.5494   -7.8097 +/- 20.5494  0.100 / 0.340
G25     316.5186       34.3993         11.5652 +/-  1.3484   18.5611 +/-  1.3484  0.030 / 0.030
G29     287.6749       10.4429         -6.5189 +/- 22.2227  -18.0137 +/- 22.2227  0.030 / 0.040