PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-22:57:30
G02     263.2          80.0               10.7 +/-    0.32      10.9 +/-    0.32  0.030 / 0.040
G05     168.9          21.5               16.1 +/-    2.16      34.1 +/-    2.16  0.030 / 0.040
G06     40.1           52.2               11.5 +/-    0.62      14.2 +/-    0.62  0.100 / 0.130
G12     321.3          58.3               10.6 +/-    0.61      12.2 +/-    0.61  0.130 / 0.180
G17     74.1           21.5               10.9 +/-    1.63      23.1 +/-    1.63  0.100 / 0.200
G19     61.2           36.8               11.0 +/-    1.02      16.9 +/-    1.02  0.100 / 0.200
G24     239.5          31.6               11.6 +/-    2.01      19.7 +/-    2.01  0.320 / 0.330
G25     317.4          16.3                7.8 +/-    2.12      18.7 +/-    2.12  0.190 / 0.380