PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/25-04:12:50
G08     262.1          15.9               10.1 +/-    1.67      24.6 +/-    1.67  0.210 / 0.490
G10     70.6           56.0                6.5 +/-    1.50       7.7 +/-    1.50  0.140 / 0.490
G11     307.5          20.5                7.6 +/-    3.14      16.4 +/-    3.14  0.040 / 0.060
G14     276.0          67.2                5.8 +/-    0.52       6.2 +/-    0.52  0.040 / 0.060
G18     309.3          35.9                5.9 +/-    1.37       9.2 +/-    1.37  0.120 / 0.390
G20     89.2           51.3                9.5 +/-    1.17      11.8 +/-    1.17  0.110 / 0.330
G21     155.7          11.3                6.1 +/-    1.99      16.4 +/-    1.99  0.030 / 0.040
G27     228.1          12.4                9.6 +/-   20.69      25.3 +/-   20.69  0.030 / 0.040
G31     175.4          37.7                8.5 +/-    1.63      12.9 +/-    1.63  0.180 / 0.430
G32     0.3            70.3                6.3 +/-    0.72       6.6 +/-    0.72  0.230 / 0.400