PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/22-23:58:10
G10     267.7          39.8                8.3 +/-    1.31      12.1 +/-    1.31  0.050 / 0.050
G13     41.4           17.1                5.8 +/-    2.84      13.7 +/-    2.84  0.040 / 0.040
G15     58.5           48.3                6.3 +/-    0.95       8.1 +/-    0.95  0.110 / 0.250
G16     279.4          12.4                7.2 +/-    1.29      19.1 +/-    1.29  0.240 / 0.300
G20     297.6          60.0                8.0 +/-    0.91       9.1 +/-    0.91  0.130 / 0.130
G21     2.0            71.5                7.9 +/-    0.58       8.3 +/-    0.58  0.110 / 0.130
G24     121.1          14.3                8.9 +/-    1.51      22.6 +/-    1.51  0.040 / 0.040
G27     319.0          18.4                6.8 +/-    1.71      15.5 +/-    1.71  0.030 / 0.040
G29     166.8          30.5                7.7 +/-    0.88      13.4 +/-    0.88  0.240 / 0.550