PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/22-01:57:50
G10     299.3          52.5                9.8 +/-    1.06      12.1 +/-    1.06  0.070 / 0.080
G14     210.9          10.9               -5.6 +/-   24.71     -15.3 +/-   24.71  0.070 / 0.100
G15     46.2           29.3                6.0 +/-    0.52      10.6 +/-    0.52  0.200 / 0.730
G20     315.3          59.2                9.1 +/-    1.35      10.4 +/-    1.35  0.220 / 0.540
G21     98.5           74.2               10.6 +/-    0.51      10.9 +/-    0.51  0.040 / 0.040
G24     94.8           26.8               11.6 +/-    0.64      21.8 +/-    0.64  0.040 / 0.040
G27     299.1          34.7               10.0 +/-    1.08      15.9 +/-    1.08  0.080 / 0.160
G32     210.8          35.1               16.1 +/-    1.11      25.5 +/-    1.11  0.080 / 0.150