PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/24-23:28:00
G10     257.1          33.1               12.9 +/-    2.16      21.2 +/-    2.16  0.040 / 0.050
G13     47.3           24.4               10.6 +/-    2.41      21.0 +/-    2.41  0.040 / 0.040
G15     72.4           54.9               11.9 +/-    0.56      14.2 +/-    0.56  0.080 / 0.240
G16     289.2          14.8                7.9 +/-    2.72      19.6 +/-    2.72  0.060 / 0.160
G20     280.0          54.7               11.0 +/-    3.17      13.1 +/-    3.17  0.030 / 0.040
G21     343.0          64.5               12.2 +/-    0.72      13.3 +/-    0.72  0.040 / 0.030
G26     262.0          12.5               11.4 +/-    1.79      30.1 +/-    1.79  0.130 / 0.400
G29     165.1          41.6               14.3 +/-    0.56      20.2 +/-    0.56  0.120 / 0.390