PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/23-00:12:30
G10     248.2          24.7               13.8 +/-    1.00      27.0 +/-    1.00  0.040 / 0.040
G13     56.2           31.3                9.1 +/-    1.28      15.4 +/-    1.28  0.050 / 0.040
G15     96.8           58.8               11.9 +/-    0.37      13.7 +/-    0.37  0.120 / 0.290
G16     297.1          16.0                9.0 +/-    1.80      21.8 +/-    1.80  0.120 / 0.270
G20     256.9          31.9               13.6 +/-    3.77      23.0 +/-    3.77  0.050 / 0.110
G21     329.1          57.5               10.5 +/-    0.65      12.2 +/-    0.65  0.060 / 0.120
G26     269.0          16.8               12.1 +/-    1.68      28.9 +/-    1.68  0.030 / 0.030
G29     164.4          54.3               11.0 +/-    0.69      13.2 +/-    0.69  0.030 / 0.030