PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/17-22:42:40
G05     46.7           22.0                5.6 +/-    2.22      11.7 +/-    2.22  0.070 / 0.070
G13     83.0           35.3               10.4 +/-    0.97      16.4 +/-    0.97  0.070 / 0.070
G15     132.4          48.1                9.7 +/-    0.86      12.5 +/-    0.86  0.140 / 0.330
G20     242.8          31.7                9.7 +/-    2.09      16.4 +/-    2.09  0.160 / 0.260
G21     307.2          42.3                8.6 +/-    0.84      12.1 +/-    0.84  0.050 / 0.100
G25     203.2          16.8                8.9 +/-    4.20      21.2 +/-    4.20  0.090 / 0.100
G26     294.6          20.0                6.7 +/-    1.67      14.8 +/-    1.67  0.040 / 0.050
G29     142.8          78.8                8.5 +/-    0.38       8.7 +/-    0.38  0.040 / 0.040