PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/06-16:58:00
G07     39.3           67.9               10.3 +/-    0.72      11.0 +/-    0.72  0.090 / 0.090
G08     61.0           46.9               10.8 +/-    1.55      14.1 +/-    1.55  0.090 / 0.100
G09     180.6          49.3               11.8 +/-    0.80      15.0 +/-    0.80  0.030 / 0.030
G11     127.7          29.5               13.4 +/-    1.04      23.7 +/-    1.04  0.030 / 0.030
G18     111.3          11.2               11.9 +/-    2.10      32.5 +/-    2.10  0.050 / 0.050
G23     160.0          17.5                9.8 +/-    1.46      23.0 +/-    1.46  0.040 / 0.050
G27     40.4           17.2                9.0 +/-    3.03      21.2 +/-    3.03  0.210 / 0.340
G28     257.3          42.4               11.3 +/-    1.64      15.8 +/-    1.64  0.180 / 0.320
G30     323.8          53.9                9.3 +/-    0.44      11.2 +/-    0.44  0.160 / 0.220