PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/14-13:28:00
G02     279.4          79.7                5.0 +/-    1.25       5.0 +/-    1.25  0.170 / 0.180
G05     171.3          22.6                7.6 +/-    2.00      15.8 +/-    2.00  0.080 / 0.190
G06     40.1           47.6                4.4 +/-    0.96       5.8 +/-    0.96  0.100 / 0.180
G12     319.5          64.7                3.5 +/-    0.66       3.8 +/-    0.66  0.090 / 0.170
G17     80.2           14.4                5.3 +/-    1.76      13.3 +/-    1.76  0.020 / 0.040
G19     64.6           35.4                4.3 +/-    2.42       6.7 +/-    2.42  0.040 / 0.050
G24     231.7          27.6                7.7 +/-    2.24      14.1 +/-    2.24  0.030 / 0.040
G25     317.5          24.5                3.6 +/-    4.09       7.1 +/-    4.09  0.040 / 0.060