PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/17-20:57:50
G10     298.6          53.0               11.0 +/-    0.80      13.5 +/-    0.80  0.070 / 0.080
G15     46.2           28.6                6.8 +/-    1.10      12.3 +/-    1.10  0.070 / 0.100
G20     354.5          65.2               10.1 +/-    2.00      11.0 +/-    2.00  0.040 / 0.040
G21     92.8           74.9               12.7 +/-    0.86      13.1 +/-    0.86  0.040 / 0.040
G24     99.7           26.6               12.6 +/-    0.46      23.7 +/-    0.46  0.040 / 0.090
G27     301.4          34.2               10.9 +/-    1.82      17.6 +/-    1.82  0.040 / 0.090
G32     209.8          32.0               12.6 +/-    1.14      21.1 +/-    1.14  0.070 / 0.140