PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/29-19:57:40
G02     322.6          80.3                8.2 +/-    0.93       8.3 +/-    0.93  0.130 / 0.170
G05     165.4          30.3               11.4 +/-    1.01      19.9 +/-    1.01  0.130 / 0.220
G06     40.3           43.7                6.9 +/-    1.10       9.5 +/-    1.10  0.030 / 0.030
G12     316.4          65.5                6.5 +/-    0.88       7.1 +/-    0.88  0.030 / 0.030
G17     82.0           15.0                7.8 +/-    2.17      19.4 +/-    2.17  0.210 / 0.300
G19     72.0           28.1                8.1 +/-    1.05      14.8 +/-    1.05  0.210 / 0.290
G24     231.3          25.0                9.2 +/-    2.55      18.0 +/-    2.55  0.130 / 0.210
G25     317.4          24.9                6.8 +/-    1.82      13.3 +/-    1.82  0.140 / 0.260