PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/14-19:26:10
G02     211.7584       46.8253         12.4150 +/-  1.0969   16.3111 +/-  1.0969  0.040 / 0.060
G06     84.4692        78.3538         11.1853 +/-  0.5236   11.3958 +/-  0.5236  0.060 / 0.060
G12     316.7120       31.1604         10.8826 +/-  2.8444   18.6083 +/-  2.8444  0.030 / 0.020
G17     53.5855        34.5081          9.8114 +/-  0.7508   15.7143 +/-  0.7508  0.020 / 0.020
G19     33.8760        52.2275         10.9377 +/-  1.3545   13.4343 +/-  1.3545  0.080 / 0.100
G24     278.1040       42.0962         11.1499 +/-  2.5624   15.6861 +/-  2.5624  0.090 / 0.100
G28     117.8477       18.6883         11.7879 +/-  2.0286   26.7843 +/-  2.0286  0.050 / 0.070