PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-00:57:30
G02     14.4           68.8                9.9 +/-    0.57      10.6 +/-    0.57  0.020 / 0.030
G05     156.6          46.0               13.4 +/-    1.01      17.8 +/-    1.01  0.020 / 0.030
G06     44.3           32.3                7.8 +/-    1.74      13.0 +/-    1.74  0.280 / 0.460
G12     280.7          77.9               11.1 +/-    0.67      11.4 +/-    0.67  0.250 / 0.370
G19     85.3           19.7               10.8 +/-    1.85      24.0 +/-    1.85  0.030 / 0.040
G24     218.9          14.2               13.0 +/-    2.80      33.0 +/-    2.80  0.030 / 0.060
G25     313.1          40.1               10.3 +/-    1.46      15.0 +/-    1.46  0.080 / 0.170
G29     296.2          19.4                9.5 +/-    1.36      21.1 +/-    1.36  0.070 / 0.170