PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/20-18:28:00
G02     306.6          80.6                7.7 +/-    0.64       7.8 +/-    0.64  0.040 / 0.050
G05     166.6          28.2                8.6 +/-    1.09      15.6 +/-    1.09  0.030 / 0.040
G06     40.1           44.9                9.5 +/-    0.94      12.8 +/-    0.94  0.100 / 0.140
G12     317.7          64.2                7.4 +/-    1.03       8.2 +/-    1.03  0.090 / 0.140
G17     80.0           16.9                7.7 +/-    2.60      18.3 +/-    2.60  0.160 / 0.160
G19     70.4           29.0                6.4 +/-    1.33      11.5 +/-    1.33  0.140 / 0.180
G24     233.2          26.3               10.1 +/-    1.50      19.2 +/-    1.50  0.080 / 0.120
G25     317.4          23.1                7.1 +/-    1.98      14.5 +/-    1.98  0.070 / 0.100