PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-23:57:40
G02     248.6          77.9                7.7 +/-    0.58       7.9 +/-    0.58  0.120 / 0.120
G05     170.3          18.0               14.3 +/-    2.27      33.0 +/-    2.27  0.100 / 0.140
G06     39.5           59.9                8.4 +/-    0.79       9.6 +/-    0.79  0.190 / 0.340
G12     320.8          50.5                7.8 +/-    1.24       9.7 +/-    1.24  0.140 / 0.320
G17     72.1           20.8                9.0 +/-    1.26      19.5 +/-    1.26  0.040 / 0.050
G19     58.4           37.3                9.0 +/-    1.19      13.7 +/-    1.19  0.040 / 0.040
G24     242.3          33.7               11.9 +/-    3.16      19.4 +/-    3.16  0.050 / 0.060
G25     316.6          14.1                5.9 +/-    3.89      14.9 +/-    3.89  0.060 / 0.060