PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/01-19:27:50
G02     89.2           10.9                8.7 +/-    2.35      23.7 +/-    2.35  0.050 / 0.120
G05     45.8           26.0                6.9 +/-    2.66      13.2 +/-    2.66  0.070 / 0.090
G13     86.7           34.8               10.2 +/-    0.99      16.3 +/-    0.99  0.080 / 0.120
G15     137.9          45.3               10.7 +/-    0.95      14.3 +/-    0.95  0.080 / 0.120
G20     240.7          30.3               10.6 +/-    1.48      18.5 +/-    1.48  0.040 / 0.060
G21     304.4          40.1                8.9 +/-    1.03      13.0 +/-    1.03  0.040 / 0.070
G25     204.9          19.4               11.1 +/-    2.12      24.8 +/-    2.12  0.120 / 0.220
G26     297.1          19.9                7.8 +/-    1.76      17.3 +/-    1.76  0.150 / 0.210
G29     132.3          83.3                9.5 +/-    0.40       9.5 +/-    0.40  0.110 / 0.300