PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/19-06:13:10
G02     8.7            72.9                4.2 +/-    0.78       4.4 +/-    0.78  0.030 / 0.070
G05     160.2          40.3                5.9 +/-    1.14       8.6 +/-    1.14  0.030 / 0.070
G06     42.8           37.0                1.4 +/-    1.01       2.2 +/-    1.01  0.050 / 0.060
G12     299.1          75.1                2.5 +/-    1.35       2.6 +/-    1.35  0.060 / 0.070
G19     80.8           23.4                4.7 +/-    2.73       9.6 +/-    2.73  0.040 / 0.030
G24     224.6          18.7                5.0 +/-    1.02      11.4 +/-    1.02  0.020 / 0.040
G25     316.1          33.7                4.8 +/-    2.23       7.9 +/-    2.23  0.030 / 0.040
G29     291.2          13.4                5.2 +/-    2.22      13.4 +/-    2.22  0.030 / 0.040