PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/27-11:57:40
G02     227.9          67.9                3.1 +/-    0.72       3.3 +/-    0.72  0.140 / 0.100
G06     43.3           64.6                3.1 +/-    0.37       3.4 +/-    0.37  0.180 / 0.440
G12     321.3          46.9                2.9 +/-    1.94       3.8 +/-    1.94  0.100 / 0.090
G17     66.9           24.1                3.5 +/-    0.86       7.0 +/-    0.86  0.080 / 0.080
G19     47.2           45.4                2.5 +/-    0.40       3.4 +/-    0.40  0.050 / 0.070
G24     247.8          38.0                4.5 +/-    0.90       6.8 +/-    0.90  0.040 / 0.050
G25     315.3          10.5              -16.7 +/-   22.67     -46.2 +/-   22.67  0.030 / 0.040