PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/31-17:57:30
G10     298.9          53.1               10.0 +/-    1.60      12.2 +/-    1.60  0.040 / 0.040
G15     45.9           26.4                8.4 +/-    1.64      15.8 +/-    1.64  0.040 / 0.030
G20     357.7          65.1               10.6 +/-    0.40      11.6 +/-    0.40  0.050 / 0.080
G21     94.4           74.3               12.2 +/-    0.57      12.6 +/-    0.57  0.060 / 0.090
G24     99.9           26.6               11.6 +/-    0.81      21.8 +/-    0.81  0.120 / 0.140
G27     301.1          34.3                8.3 +/-    0.94      13.3 +/-    0.94  0.090 / 0.160
G32     209.6          32.8               12.9 +/-    2.20      21.4 +/-    2.20  0.060 / 0.100