PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/21-23:43:00
G05     49.4           15.6                6.9 +/-    2.54      16.9 +/-    2.54  0.190 / 0.210
G10     237.1          13.5               10.5 +/-    1.78      27.1 +/-    1.78  0.210 / 0.170
G13     73.8           36.2                9.7 +/-    1.25      15.1 +/-    1.25  0.060 / 0.070
G15     126.2          52.9               10.7 +/-    0.39      13.1 +/-    0.39  0.060 / 0.060
G16     311.7          13.7                7.1 +/-    2.57      18.2 +/-    2.57  0.170 / 0.300
G20     244.7          21.4               13.8 +/-    1.50      29.3 +/-    1.50  0.140 / 0.250
G21     313.7          47.2                8.3 +/-    3.23      10.9 +/-    3.23  0.070 / 0.090
G26     284.4          20.7               11.3 +/-    1.20      24.5 +/-    1.20  0.050 / 0.110
G29     157.4          72.0                8.8 +/-    0.30       9.2 +/-    0.30  0.030 / 0.040