PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-21:42:50
G02     210.2          52.4               18.7 +/-    0.74      22.9 +/-    0.74  0.080 / 0.220
G06     103.3          80.3               17.0 +/-    1.02      17.2 +/-    1.02  0.070 / 0.230
G12     314.4          26.4               11.1 +/-    1.12      21.1 +/-    1.12  0.060 / 0.070
G17     50.3           37.5               12.7 +/-    0.33      19.3 +/-    0.33  0.050 / 0.080
G19     29.7           54.1               14.9 +/-    0.62      17.9 +/-    0.62  0.080 / 0.130
G24     275.5          42.5               14.0 +/-    0.85      19.6 +/-    0.85  0.080 / 0.160
G28     115.1          23.9               16.1 +/-    1.12      32.3 +/-    1.12  0.050 / 0.070