PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/23-19:13:20
G02     22.3           63.0                6.9 +/-    0.68       7.7 +/-    0.68  0.070 / 0.080
G05     150.7          54.3               10.1 +/-    0.59      12.1 +/-    0.59  0.040 / 0.060
G06     49.1           21.9                6.1 +/-    1.55      12.9 +/-    1.55  0.240 / 0.260
G12     222.8          77.0                6.9 +/-    0.31       7.0 +/-    0.31  0.150 / 0.280
G19     93.4           13.3                8.2 +/-    2.23      21.2 +/-    2.23  0.040 / 0.040
G25     307.4          46.4                7.7 +/-    0.53      10.2 +/-    0.53  0.040 / 0.040
G29     301.3          22.5                9.4 +/-    1.04      19.5 +/-    1.04  0.090 / 0.130