PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/24-18:28:10
G02     207.7          40.4               14.0 +/-    2.23      20.3 +/-    2.23  0.140 / 0.160
G06     130.4          77.8               11.2 +/-    0.80      11.5 +/-    0.80  0.070 / 0.150
G12     313.3          24.4               11.8 +/-    1.73      23.3 +/-    1.73  0.050 / 0.070
G17     47.0           40.0               10.7 +/-    0.73      15.5 +/-    0.73  0.050 / 0.090
G19     23.3           57.6               11.7 +/-    0.30      13.6 +/-    0.30  0.040 / 0.060
G24     288.4          40.9                9.3 +/-    1.11      13.4 +/-    1.11  0.040 / 0.060
G28     111.7          24.3               10.6 +/-    1.11      21.1 +/-    1.11  0.050 / 0.080