PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/07-05:12:30
G02     247.8          77.7                3.5 +/-    0.33       3.6 +/-    0.33  0.030 / 0.040
G05     171.1          17.3                4.6 +/-    2.68      10.8 +/-    2.68  0.040 / 0.040
G06     39.2           61.9                3.3 +/-    0.43       3.6 +/-    0.43  0.150 / 0.250
G12     321.0          51.1                2.0 +/-    0.42       2.4 +/-    0.42  0.140 / 0.220
G17     72.9           19.4                2.3 +/-    3.26       5.0 +/-    3.26  0.120 / 0.110
G19     57.4           38.6                3.7 +/-    1.65       5.5 +/-    1.65  0.100 / 0.090
G24     240.3          33.6                5.6 +/-    2.30       9.1 +/-    2.30  0.040 / 0.030
G25     316.7          16.6                0.4 +/-    1.21       1.0 +/-    1.21  0.050 / 0.030