PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/25-16:12:20
G02     225.5          65.5               10.9 +/-    1.16      11.8 +/-    1.16  0.050 / 0.090
G06     44.4           63.7                9.4 +/-    0.56      10.3 +/-    0.56  0.050 / 0.090
G12     322.4          49.4                8.8 +/-    1.03      11.2 +/-    1.03  0.040 / 0.040
G17     65.5           25.4                7.2 +/-    2.08      14.0 +/-    2.08  0.030 / 0.050
G19     45.4           46.5                9.8 +/-    0.68      12.9 +/-    0.68  0.020 / 0.020
G24     251.7          38.8               12.8 +/-    2.80      19.0 +/-    2.80  0.030 / 0.030