PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/17-19:43:10
G10     257.6          33.7               13.3 +/-    2.11      21.7 +/-    2.11  0.120 / 0.280
G13     46.9           24.0                8.8 +/-    1.00      17.6 +/-    1.00  0.050 / 0.060
G15     72.3           55.1               11.0 +/-    0.56      13.0 +/-    0.56  0.040 / 0.050
G16     287.7          15.0                8.9 +/-    2.92      22.1 +/-    2.92  0.060 / 0.200
G20     282.6          56.3               12.7 +/-    0.72      14.9 +/-    0.72  0.050 / 0.250
G21     343.6          64.8                9.2 +/-    1.40      10.0 +/-    1.40  0.170 / 0.580
G26     261.1          12.3               12.7 +/-    2.09      33.7 +/-    2.09  0.130 / 0.480
G27     322.0          10.9              -10.8 +/-   31.61     -29.6 +/-   31.61  0.050 / 0.050
G29     165.7          42.2               13.6 +/-    0.80      19.1 +/-    0.80  0.040 / 0.050